MINING GURUKUL

CMR 2017 MCQ

2024-02-24T00:37:00.000-08:00

import random class MCQ: def __init__(self, question, options, answer): self.question = question self.options = options self.answer = answer def display_question(self): print(self.question) random.shuffle(self.options) # Shuffle options to make it more dynamic for i, option in enumerate(self.options, start=1): print(f"{i}. {option}") def check_answer(self, user_answer): return user_answer.lower() == self.answer.lower() # Define MCQs mcqs = [ MCQ("What form should be used to submit the notice for commencement of any mining operation?", ["a) Form A", "b) Form B", "c) Form specified by the Chief Inspector", "d) No specific form required"], "c"), MCQ("Who should the notice of opening be submitted to?", ["a) Chief Inspector and District Magistrate", "b) Chief Inspector and Regional Inspector", "c) Regional Inspector and District Magistrate", "d) Regional Inspector and Safety Officer"], "b"), MCQ("What should accompany the notice of opening?", ["a) Safety Management Plan", "b) Environmental Impact Assessment Report", "c) Geological Survey Report", "d) Mining Lease Agreement"], "a"), MCQ("When should the surface plan and Safety Management Plan be submitted for an already opened mine?", ["a) Within 30 days", "b) Within 60 days", "c) Within 90 days", "d) Within 120 days"], "b"), MCQ("Who should be informed about the actual date of opening?", ["a) Chief Inspector and Regional Inspector", "b) Regional Inspector and District Magistrate", "c) District Magistrate and Safety Officer", "d) Safety Officer and Chief Engineer"], "a"), MCQ("When should the owner submit annual returns for a mine?", ["a) On or before 1st day of February", "b) On or before 1st day of March", "c) On or before 1st day of April", "d) On or before 1st day of May"], "a"), ] # Function to present MCQs in an exam-like interface def present_exam(mcqs): score = 0 total_questions = len(mcqs) for i, mcq in enumerate(mcqs, start=1): print(f"Question {i}:") mcq.display_question() user_answer = input("Your answer: ") if mcq.check_answer(user_answer): print("Correct!") score += 1 else: print("Incorrect!") print(f"Correct answer: {mcq.answer}") print() print(f"You scored {score} out of {total_questions}") # Present the exam present_exam(mcqs)

Top 10 MCQ in Mining Engineering

2023-05-18T23:51:00.003-07:00

Top 10 MCQ in Mining Engineering

Which of the following is not a common method of underground mining? a) Longwall mining b) Room and pillar mining c) Open-pit mining d) Cut-and-fill mining
What is the process of separating minerals from gangue called? a) Crushing b) Beneficiation c) Extraction d) Smelting

3.Which of the following is not a commonly used drilling method in mining? a) Rotary drilling b) Percussion drilling c) Diamond drilling d) Jet drilling
4.Which type of mine ventilation system relies on natural air movement? a) Forced ventilation b) Mechanical ventilation c) Natural ventilation d) Induced ventilation

5.Which of the following is not a common surface mining technique?
a) Strip mining b) Mountaintop removal c) Placer mining d) Shaft mining
6.What is the primary purpose of backfilling in underground mining? a) To stabilize the mine walls b) To support the roof of the mine c) To dispose of waste material d) To prevent subsidence
7.Which of the following minerals is commonly used as a blasting agent in mining operations? a) Coal b) Iron ore c) Limestone d) Nitroglycerin
8. What is the term for the process of removing overburden and extracting coal from a coal seam? a) Drift mining b) Slope mining c) Longwall mining d) Surface mining
9.Which of the following is an example of a metallic mineral? a) Quartz b) Feldspar c) Gypsum d) Copper

10.What is the term for the process of converting ore into a metal? a) Mining b) Beneficiation c) Extraction d) Metallurgy

Solution: c) Open-pit mining 2. b) Beneficiation 3 d) Jet drilling 4. c) Natural ventilation 5. d) Shaft mining 6. a) To stabilize the mine walls 7 d) Nitroglycerin 8. d) Surface mining 9.d) Copper 10.c) Extraction

Algorithms of Blast Design | Application of Computer in Mining

2023-05-18T23:40:00.003-07:00

Algorithms of Blast Design:-

Blast design in mining involves the process of determining the optimal parameters for a blast, such as hole size, spacing, burden, stemming, and explosive loading, to achieve the desired fragmentation and minimize adverse effects. While blast design algorithms can vary depending on the specific mining operation and blasting objectives, here is a general overview of the steps involved in blast design:

1.Define Blasting Objectives: Clearly define the objectives of the blast, considering factors such as desired fragmentation size, rock properties, geotechnical considerations, and environmental constraints.

2.Geological and Geotechnical Assessment: Gather geological and geotechnical data about the rock mass, including its strength, structure, and properties. Conduct site-specific assessments to identify any potential challenges or risks related to the blast.

3.Blasthole Layout: Determine the layout and arrangement of blastholes based on the geological and geotechnical information. Consider factors such as bench height, burden, spacing, and sub-drilling depth. The blasthole layout should aim to achieve optimal fragmentation and minimize adverse effects such as overbreak or flyrock.

4.Powder Factor Calculation: Calculate the powder factor, which represents the amount of explosive needed per unit volume of rock. The powder factor depends on the rock properties, desired fragmentation, and specific blasting objectives. It is typically calculated based on empirical relationships or through the use of rock fragmentation models.

5.Explosive Selection: Select the appropriate type and amount of explosive based on its energy characteristics, sensitivity to initiation, and compatibility with the rock mass. Consider factors such as desired blast results, safety requirements, and environmental considerations.

6.Initiation Design: Determine the initiation sequence and timing for the blast. This involves selecting the initiation system, such as electronic detonators or shock tube systems, and designing the initiation pattern to ensure proper propagation of the blast and achieve desired results.

7.Blast Simulation and Optimization: Utilize blast design software or simulations to model and optimize the blast design parameters. These simulations consider various factors, such as rock properties, explosive characteristics, hole layout, and initiation pattern, to predict the blast outcomes and assess potential risks or problems.

8.Safety Measures: Implement safety measures to protect personnel and surrounding infrastructure during blasting operations. This includes establishing exclusion zones, using warning signals, and ensuring proper communication protocols.

9.Blast Implementation and Monitoring: Implement the blast design by drilling the blastholes, loading the explosives, and initiating the blast. Monitor the blast using seismographs, high-speed cameras, and other measurement techniques to assess its effectiveness, fragmentation, and adherence to design parameters.

10.Post-Blast Assessment: Evaluate the results of the blast, including fragmentation, muckpile shape, vibration levels, and any adverse effects. Compare the actual results with the desired objectives and make adjustments to future blast designs if necessary.

Conclusioin :- It's important to note that blast design algorithms can be complex and site-specific, considering various factors such as rock type, bench geometry, local regulations, and environmental considerations. Professional expertise in blasting engineering, geotechnical analysis, and the use of specialized software is often required to develop effective and safe blast designs.

Remote control operation in mining

2023-05-18T23:29:00.003-07:00

Remote control operation in mining:-

Remote control operation in mining refers to the ability to operate mining equipment and machinery from a remote location, typically through the use of advanced technologies and communication systems. While remote control operation offers several benefits, it also has certain applications and limitations. Let's discuss them:

Applications of Remote Control Operation in Mining:-

1.Safety Enhancement: Remote control operation allows miners to operate equipment from a safe distance, reducing the risk of accidents and injuries associated with hazardous mining environments. Miners can control machinery in potentially dangerous areas without being physically present.

2.Increased Efficiency and Productivity: Remote control operation enables continuous operation of equipment without the need for operators to be physically present at the mining site. This can result in increased equipment utilization, improved productivity, and reduced downtime.

3.Remote and Inaccessible Areas: Remote control operation is particularly useful in mining operations located in remote or geographically challenging areas. It eliminates the need for personnel to travel to such locations, reducing logistics costs and improving access to valuable resources.

4.Minimizing Exposure to Harmful Substances: In certain mining operations, such as underground coal mining or handling toxic substances, remote control operation allows operators to control machinery without being exposed to harmful gases, dust, or chemicals.

5.Improved Equipment Maintenance: Remote monitoring and control systems can provide real-time data on equipment performance, allowing for proactive maintenance and timely interventions. This can extend the lifespan of mining equipment and reduce maintenance costs.

Limitations of Remote Control Operation in Mining:

1.Technological Limitations: Remote control operation relies on advanced technologies such as sensors, communication networks, and automation systems. Technical failures or communication disruptions can impact the effectiveness and reliability of remote control operations.

2.Limited Manual Intervention: In certain mining scenarios, human judgment and manual intervention are necessary, especially in complex situations or emergencies. Remote control operation may not always provide the same level of decision-making capabilities as an operator physically present on-site.

3.Regulatory and Safety Considerations: Remote control operation in mining must comply with regulatory requirements and safety standards. It may be subject to specific regulations regarding equipment operation, communication systems, and emergency response procedures.

4.Skill Requirements and Training: Remote control operation requires specialized skills and training for operators to effectively control equipment remotely. Adequate training programs and ongoing skill development initiatives are necessary to ensure competent remote operators.

5.Cost and Infrastructure: Implementing remote control operation in mining requires significant investment in infrastructure, communication networks, and technology deployment. The initial costs and ongoing maintenance expenses can be substantial, especially for smaller mining operations.

6.Limited Flexibility: Remote control operation may have limitations in terms of flexibility compared to direct on-site operations. Certain activities or tasks may still require physical presence or manual operation, limiting the full scope of remote control capabilities.

Various types of mining methods

2023-05-18T23:14:00.006-07:00

What are the various types of mining methods?

There are several types of mining methods used to extract minerals and ores from the Earth's crust. The choice of mining method depends on factors such as the type of deposit, its depth, location, and economic viability. Here are some common mining methods:

1.Open-Pit Mining: Also known as open-cast or open-cut mining, this method is used to extract minerals near the surface. Large open pits are excavated using heavy equipment such as excavators, bulldozers, and haul trucks. It is suitable for deposits that are widespread and of sufficient size to justify the cost of mining. Open-pit mining is commonly used for minerals such as coal, copper, gold, iron, and diamond.

2.Underground Mining: This method involves extracting minerals from deep underground. There are various techniques within underground mining:

a. Room and Pillar Mining: In this method, tunnels or "rooms" are excavated, leaving pillars of untouched material to support the roof. It is commonly used for coal and salt mining.

b. Longwall Mining: This method is used for the extraction of flat or gently dipping mineral deposits, typically coal. A shearing machine removes the mineral along a long face, while hydraulic supports hold up the roof. As the machine advances, the roof collapses behind it, creating a subsidence.

c. Cut and Fill Mining: This method is used in irregular or steeply dipping ore bodies. Horizontal tunnels are excavated, and the ore is removed in horizontal slices. As each slice is extracted, the void is filled with waste material or other support structures.

d. Sublevel Caving: This method is used for large, low-grade deposits. Ore is extracted through a network of tunnels, and gravity causes the overlying rock to cave into the voids created by the extraction.

3.Placer Mining: This method involves the extraction of minerals from alluvial deposits, such as rivers, streambeds, and beach sands. Placer mining relies on the density difference between the valuable minerals and surrounding material. Techniques such as panning, sluicing, and dredging are used to separate the minerals from the sediment.

4.Mountaintop Removal Mining: This method is used for the extraction of coal or other minerals from mountaintops. It involves removing the top of a mountain to expose the coal seams or mineral deposits underneath. The removed rock and soil are typically deposited in nearby valleys, altering the landscape.

5.In-situ Mining: Also known as in-situ leaching or solution mining, this method is used to extract minerals that are dissolved in a liquid, typically water or a chemical solution. The solution is injected into the deposit, and the dissolved minerals are brought to the surface for further processing. In-situ mining is commonly used for extracting minerals such as uranium and some types of copper deposits.

6.Underground Coal Gasification (UCG): UCG is a method used to extract energy from coal seams that are too deep to mine conventionally. It involves injecting a gas into the coal seam and igniting it underground. The heat released converts the coal into a synthetic gas, which is then extracted and used for various purposes.

Conclusion - These are just a few examples of the mining methods employed in the industry. The selection of the appropriate mining method depends on factors such as the characteristics of the deposit, accessibility, economic viability, environmental considerations, and regulatory requirements.

Introductin To Mining

2023-05-18T22:51:00.008-07:00

What is mining?

Mining is the process of extracting valuable minerals, ores, and other geological materials from the Earth's crust. It is an essential industry that plays a significant role in supplying raw materials for various sectors, including manufacturing, construction, energy production, and technology. Mining involves the exploration, extraction, processing, and refining of minerals and resources to obtain usable products.

Mining is a complex and multidisciplinary industry that requires expertise in geology, engineering, environmental sciences, and resource management. It involves careful planning, efficient operations, and adherence to regulations and standards to ensure the sustainable extraction and utilization of Earth's mineral resources.

Here are some key aspects of mining:

Exploration: The initial stage of mining involves the identification and evaluation of potential mineral deposits. Geologists and mining companies use various methods, such as geological surveys, drilling, and sampling, to determine the presence and quality of mineral resources.
Extraction: Once a viable deposit is identified, the extraction phase begins. Different mining methods are used depending on the type of deposit and its depth. Common mining methods include open-pit mining, underground mining, placer mining, and mountaintop removal mining. Each method involves removing the overlying material or accessing the deposit through tunnels or shafts to extract the minerals.
Processing and Beneficiation: Extracted minerals often need to be processed to remove impurities and increase their value. Processing techniques vary depending on the type of mineral and desired end-product. Processes may include crushing, grinding, sorting, washing, flotation, smelting, and refining to obtain the desired concentration or purity of the minerals.
Environmental Considerations: Mining operations have environmental impacts, and responsible mining practices aim to mitigate these impacts. Environmental considerations include land disturbance, water pollution, air pollution, habitat destruction, and the management of waste materials. Regulations and best practices are in place to minimize these impacts and promote sustainable mining practices.
Safety and Health: Mining can be a hazardous occupation due to various factors, including working in confined spaces, exposure to harmful substances, and risks of cave-ins or explosions. Safety protocols, training programs, and proper equipment are essential to protect workers' health and ensure their safety in mining operations.
Economic Importance: Mining plays a vital role in the economy by providing employment opportunities, contributing to national income, and driving economic growth in many countries. Mining activities also generate revenue through taxes, royalties, and export of mineral products.
Sustainability and Responsible Mining: Sustainable mining practices aim to balance economic growth with environmental stewardship and social responsibility. This includes minimizing environmental impacts, ensuring the health and safety of workers, engaging with local communities, and adhering to ethical and responsible mining practices.

Wire Rope | Classification Of Wire Rope | Mine Machinery Hindi Notes

2020-06-25T05:35:00.032-07:00

Wire Rope- वायर रोप वायर के Strands (तंतुओं) के Special arrangements से बना होता है, यह वायर के कई तंतुओं (Strands) को twist करके बनाया जाता है।

Classification of wire Rope-

1. बनावट के आधार पर (Classification on the basis of construction)-

i) Stranded wire rope

ii) Non Stranded wire rope

2. गति के आधार पर(on the basis of movement)-

i) Running Rope

ii) Stationary Rope

iii)Guide Rope

3. कोर के आधार पर (On the basis of Core)-

i)Fibre core wire rope

ii)Steel core wire rope

iii)Independent Wire rope core type wire rope.

4.On the basis of laying arrangements-

i)Ordinary lay wire rope

a)Right hand ordinary lay wire rope

b)Left hand Ordinary lay wire rope

ii) Lang's lay wire rope

a)Right hand Lang's lay wire rope

b)Left hand Lang's lay wire rope

1. बनावट के आधार पर (On the basis of construction)-

i)Stranded wire rope- ऐसा wire rope जिसे एक centre core के ऊपर तंतुओं(strands) को चारों ओर (Concentrically) twist करके बनाया गया हो तो इस प्रकार के वायर रोप को Stranded wire rope कहा जाता है। ये ropes running ropes होते हैं।

Strands- यह सेंट्रल स्टील वायर के around कुछ wires को Concentrically twist करके बनाया जाता है|

-6×7 wire rope का मतलब है कि wire rope 6 strands से मिलकर बना है और प्रत्येक Strand 7 वायर से मिलकर बना होता है।

Uses-

running ropes का उपयोग winding,Arial ropeways,haulage,shaft sinking,manriding,etc मैं किया जाता है।

Advantages of Stranded wire ropes-

1. इनमें लचीलापन (flexibility) अधिक होती है।
2. इनका splicing किया जा सकता है।
3. इनका बनावट(construction) सरल होता है।
4. इनका capping सरल होता है।

Disadvantages of Stranded wire rope-

1. यह non Stranded wire ropes की तुलना में कम भार सहन कर सकते हैं।
2. इनमें spinning अधिक होता है।
3. इनका factor of safety कम होता है।

ii) Non Stranded wire rope-

इस प्रकार के wire rope का मध्य भाग (central portion) मोटी(thick) wire के strand से बना होता है और इसके बाहरी भाग(outer layer) में round wire को विशेष आकार के I-section,rail section, trapezoidal section के बीच में रख कर(placed) करके बनाया जाता है ताकि यह दूसरे से लॉक हो जाए। इन्हें Locked coil wire rope भी कहा जाता है।
Locked coil wire rope अधिक heavy और strong तथा कम flexible होते हैं।

Uses-
इनका उपयोग shaft में guide rope के रूप में,Bicable arial ropeways में bucket supporting के रूप में, आदि जगहों पर होते हैं।

Advantages of Non Stranded wire rope-

1. इन wire rope का factor of safety अधिक होता है।
2.यह non spinning quality का होता है।
3. यह Stranded wire rope की तुलना में अधिक भार (load) सहन कर सकते हैं।

Disadvantages of Non Stranded wire rope-

1. इनका बनावट (construction) कठिन होता है।
2. इनका splicing नहीं किया सकता।
3. यह कम flexible होते हैं।
4. इनका Capping कठिन होता है।

MINING ENGINEERING NOTES || Mining Gurukul

2020-06-13T01:02:00.004-07:00

Mining Engineering notes-

Note:- Visit to our Youtube Channel for Mining Video Lecture

1.Various Types of Entries of Open Cast mines

2.MINE ECONOMIC AND BENIFICATION Written notes MINING.pdf

3.Mine Management pdf

SECL TECHNICHIAN APPRENTICE(PDPT) UPDATE || SECL || PDPT 2020

2020-06-10T03:34:00.002-07:00

SECL TECHNICHIAN APPRENTICE(PDPT) UPDATE-

Withdrawal of cancellation of Technichian Apprentice 2019-20 notice Date 08-06-2020

Cancellation notice of Technichian Apprentice 2019-20 (PDPT) dated 03-06-2020

Classification of methods of Stoping methods || metal mining

2020-05-03T02:38:00.001-07:00

Classification of methods of Stoping methods-

A. Naturally supported stopes -

1.Open Stoping

a) Open stope in small ore body.
b) Sublevel Stoping
c) Long Hole Stoping

2.Open Stopes with pillar supports-

a) Casual Pillar method.
b) Room and pillar method

B. Artificially supported stopes -

1. Shrinkage Stoping

a) With Pillar
b) without Pillar
c) With Subsequent waste filling

2. Cut and Fill Stoping.

3. Stulled Stopes in narrow veins.

4. Square Set Stoping

C. Caved Stopes -

1. Caving (Ore broken by induced caving/blasting)

a) Block caving - caving is done by providing undercut in buttom of ore block.
b) Sublevel Caving Stoping.

2. Top Slicing ( Stoping under a wire mat)

D. Combination of supported and caved stopes.
(e.i. Shrinkage stoping with pillar caving, Cut and Fill stoping with pillar caving, etc )

NOTE- Click to Visit to our You Tube channel for Mining Video lectures.

REVISED NOTICE FOR TECHNICIAN APPRENTICES SELECTION 2019-20

2020-03-09T00:27:00.003-07:00

REVISED NOTICE FOR TECHNICIAN APPRENTICES SELECTION 2019-20

REVISED DATE FOR DOCUMENT VERIFICATION TECHNICIAN APPRENTICES SELECTION 2019-20

PROVISIONAL SELECTION LIST TECHNICIAN APPRENTICES

PROVISIONAL SELECTION WAITING LIST TECHNICIAN APPRENTICES

IOCL TECHNICIAN AND TRADE APPRENTICE VACANCY | INDIAN OIL CORPORATION LIMITED || TECHNICIAN AND TRADE APPRENTICE VACANCY

2020-02-28T00:10:00.001-08:00

INDIAN OIL CORPORATION LIMITED(IOCL)

TECHNICIAN AND TRADE APPRENTICE VACANCY

1.Vacancy Details-

Sl No Post Name No of Posts
01 Technician Apprentice 265
02 Trade Apprentice (Technical) 99
03 Trade Apprentice (Non-Technical) 136
(Accountant & DEO)

02.Qualification-

For Technician Apprentice: Diploma (Relevant Engg Disciplines)
For Trade Apprentice: ITI (Relevant Trade Disciplines)
For Non Technical Trade Apprentice – Accountant: Graduation in Any Disciplines
For Non Technical Trade Apprentice – Data Entry Operator: 12th Class

03.Important Dates-
Last Date to Apply Online: 20-03-2020

04.Age limit - as on 29-02-2020

Minimum Age Limit: 18 Years
Maximum Age Limit: 24 Years
Age Relaxation is applicable to as per rules-
for ST/SC candidate - 5years
for OBC candidate - 03 years

05. Important Links-

Apply Online

Registration | Login

Notice Regarding Age Limit

Click Here

Notification

Click Here

Official Website

Click Here

Csvtu Diploma Mining Engg. question paper || CSVTU || mininggurukul.com

2020-02-27T09:05:00.000-08:00

Csvtu Diploma Mining diploma question paper

Diploma 1st Semester-

Applied Mathematics -01 April - may 2017.pdf

Diploma 2nd Semester-

Element of mining technology 2nd sem April-may 2017.pdf

Computer fundamental and its app.2nd sem app-may 2017.pdf

Engineering Drawing 2nd sem April-may 2017.pdf

Diploma 3rd Semester-

Strata Control and Roof Support 3rd sem Nov-dec 2017.pdf

Basic Civil Engineering 3rd sem Nov-Dec 2017.pdf

Diploma 4th Semester-

Applied Geology 4th sem Dec-jan 2011-12.pdf

Applied Geology 4th sem Dec-jan 2013 -.pdf

Applied Geology 4th sem April-may 2018.pdf

Appied Geology 4th sem Nov-dec 2019.pdf

Mine Surveying 4th sem June - 2014.pdf

Mine Surveying 4th sem April-may 2018.pdf

Mine Safety and Legislation April-may 2017.pdf

Mine Safety and Legislation April-may 2018.pdf

Winning and Working Coal April-may 2018.pdf

Winning and Working Coal Nov-Dec 2019.pdf

Basic Electrical engineering April-may 2017.pdf

Basic Electrical engineering April-may 2018.pdf

Basic Electrical engineering April-may 2019.pdf

Diploma 5th Semester-

Drilling and Blasting practices in mines Nov - Dec 2019.pdf

Drilling and Blasting practices in mines 5th sem April - may 2018.pdf

Drilling and Blasting practices in mines 5th sem Nov - December 2018.pdf

Drilling and Blasting practices in mines Nov - dec 2017.pdf

Advance Mining Geology Nov-dec 2017.pdf

Advance Mining Geology April-may 2018.pdf

ADVANCE Mining Geology Nov- Dec 2018.pdf

Advance Mining Geology Nov-dec 2019.pdf

Mine Machinery and Maintenance Nov-Dec 2017.pdf

Mine Machinery Nov- dec 2018.pdf

Mine Machinery and Maintenance Nov-Dec 2019.pdf

Wining and working metals,Nov-Dec 2015.pdf

Winning and Working Metal Nov-dec 2017.pdf

Winning and working metal Nov- Dec 2018.pdf

Winning and Working Metal Nov-dec 2019.pdf

Mine fire, Explosion, inundation, Rescue and Recovery,Jan 2015.pdf

Mine fire, explosion,inundation and rescue Nov-Dec 2017.pdf

Mine fire, explosion,inundation and rescue Nov-Dec 2018.pdf

Mine fire, explosion,inundation and rescue Nov-Dec 2019.pdf

Diploma 6th Semester-

Advance mine Surveying April-may 2018.pdf

Advance mine Surveying, may jun 2015.pdf

Advance mine Surveying,jan 2015.pdf

Mine Economics and Benefication april - may 2019.pdf

Mine Economics and Benefication,april - may ,2018.pdf

Mine management legislation and general safety ,may jun 2015.pdf

Mine management legislation and general safety apr-may 2016.pdf

Mine management legislation and general safety apr-may 2019

Open cast mining and land Reclamation, April-may 2019.pdf

Entrepreneurship Development April - May 2019.pdf

NCL HEMM Operator Vacancy || Northern Coalfields Limited HEMM TRAINEE

2020-02-24T13:25:00.000-08:00

NCL HEMM Operator Vacancy-

NCL invites online applications from Indian nationals possessing minimum qualifications required for regular appointment to the following positions of HEMM Operator (Trainee); namely, Dragline Operator (Trainee), Dozer Operator (Trainee), Grader Operator (Trainee), Dumper Operator (Trainee), Shovel Operator (Trainee), Pay Loader Operator (Trainee), Crane Operator (Trainee) and Drill Operator (Trainee) for its well equipped 10 highly mechanized open cast mines situated in Singrauli District of Madhya Pradesh and Sonebhadra District of Uttar Pradesh.

1.Minimum Qualification/ Vacancies:-

S. NO.	Position/ Designation Name	Total Vacancies	Minimum Essential Qualification
1.	Dragline Operator (Trainee)	09	(i). Matriculate /SSC/ High School or equivalent passed from any recognized Board of Secondary / Higher Secondary Education of Indian State(s). (ii). ITI in Diesel Mechanic/ Motor Mechanic/ Fitter Trade(s) with Valid NCVT/ SCVT Trade certificate(s). (iii). Valid HMV License issued from any RTA/ RTO of Indian State(s).
2.	Dozer Operator (Trainee)	48	(i). Matriculate /SSC/ High School or equivalent passed from any recognized Board of Secondary / Higher Secondary Education of Indian State(s). (ii). Valid HMV License issued from any RTA/ RTO of Indian State(s) along with Endorsement for Tractor Driving.
3.	Grader Operator (Trainee)	11
4.	Dumper Operator (Trainee)	167	(i). Matriculate /SSC/ High School or equivalent passed from any recognized Board of Secondary / Higher Secondary Education of Indian State(s). (ii). Valid HMV License issued from any RTA/ RTO of Indian State(s).
5.	Shovel Operator (Trainee)	28
6.	Pay Loader Operator (Trainee)	6
7.	Crane Operator (Trainee)	21
8.	Drill Operator (Trainee)	17	Matriculate /SSC/ High School or equivalent passed from any recognized Board of Secondary / Higher Secondary Education of Indian State(s).

Note-Minimum Percentage of Mark in Matriculation to become eligible to apply.

1 General - 55%

2. OBC-NCL - 50%

3 SC/ST - 45%

2. Age Limit:

(i) The candidate(s) must have attained the minimum age of 18 years as on the Crucial Date and the age should not exceed 30 years on the Crucial Date. However, relaxation in the upper age limit of 30 years is available to different categories as provided below-

Note- Maximum Age Relaxation Permissible Beyond the Upper Age Limit(As on Crucial date i.e.30/03/2020)

1 UR/ EWS - No relaxation
2 SC/ ST - 5 Years
3 OBC(NCL) - 3 Years
4 Ex Servicemen (ESM) Actual period of service rendered in defence services +3 years (8 years for SC/ST ESM) ,subject to maximum age of 50 years
5 Departmental Candidates (All employees of CIL and Its subsidiary companies)
No upper age Limit

3. Important Dates:

Start date of Online registration and form submission - 16/03/2020 (00:01AM)
Closing date for online registration and form submission - 30/03/2020 (11:45PM)

4. Examination Fee:-

Candidate(s) will have to make the payment of Application Fees through the Online Mode as under:

1.For Un Reserved /OBC /EWS - Rs 500.00
2.For SC/ ST / ESM / Departmental Candidates - Nil

5.Minimum Cut-Off Marks-

Posts	Maximum Marks	Category of Candidates	Minimum Cut-Off Marks required for Selection out of Maximum Marks
ALL HEMM POSITIONS OTHER THAN DRAGLINE OPERATOR (TRAINEE)	100 (Common Paper of 100 Marks)	UR , EWS	50 marks
ALL HEMM POSITIONS OTHER THAN DRAGLINE OPERATOR (TRAINEE)	100 (Common Paper of 100 Marks)	SC/ ST/ ESM/ OBC-NCL	40 marks
DRAGLINE OPERATOR (TRAINEE)	150 (Common Paper & Additional Technical paper of 50 marks)	UR , EWS	75 marks
DRAGLINE OPERATOR (TRAINEE)		SC/ ST/ ESM/ OBC-NCL	60

Secondary Blasting | Secondary Blasting in mines

2020-02-15T23:59:00.005-08:00

Secondary Blasting

Secondary Blasting -in open cast mines during the blasting in the high benches are broken. Many times the required fragmentation is not formed and large lumps are created. These large lumps or blocks are not handy and these blocks create loading problems by machines. To breaking of such big blocks into desire fragments by re-blasting is known as Secondary blasting.

Method of secondary Blasting-
1.Pop shooting.
2.Plaster shooting.
3.Snake shooting.

1.Pop shooting- in pop shooting a small hole of 30 mm dia is made in the block. the lenth of hole is approx 0.3-0.4m. these holes are charged with small priming cartridge. And these holes are blasted. Due to Blasting the block is broken to pieces. The Blasted material is scattered and the desired fragmentation are achieved.

Pop shooting

Advantages of pop shooting-
1.there are no much sound.
2.Explosive consumption is less as compared to other method.

Disadvantages-
1. Fly rock problem is more.
2. Workers and drilling cost are required.

2.Plaster shooting- in this case of secondary blasting the surface of the block or lumps is dressed slightly and and make a small area plane on the top of the block. The slab of explosive or cartridge is placed on the plane area on the top of block. And this slab of explosive is covered with thick mud on its top. When such a charge of explosive is blasted, due to shattering effect of the explosive the cracks are developed in the block. After the block can be splitted in small and handy block along the plane of cracks.

Plaster shooting

Advantages of plaster shooting-
1. No drilling is necessary.
2.No fly rock problem.
3.The whole process take less time compare to other method.

Disadvantages-
1.More noise is create.
2.Explosive consumption is high compare to other method.

3.Snake Shooting- in this case the explosive is not placed on the block top of the block. But small space is made below the big block. The explosive charged is placed at this space below the block such the explosive charge is almost touching the block. The charge of explosive is covered by thick layer of mud as far as possible including the possible side. When such a charge of explosive is blasted under the big block or lumps the detonation waves of explosive charge travel in all direction including the open side. While the waves traveling in the block cause cracks in the block. Thus big block is broken into small block.

Snake shooting

Advantages of snake shooting-
1.No fly rock problem.
2.No drilling is required.
3.No waste of time and money in drilling operations.

Disadvantages of pop shooting-
1.Explosive consumption is high.
2.Most of explosive energy is lost through open space.
3.More noise is created due to such blasted.

GATE MINING QUESTION PAPER || GATE QUESTION PAPER

2020-02-15T22:40:00.002-08:00

GATE MINING QUESTION PAPER

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GATE Mining Question paper 2019 Download

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Classification of explosive | explosive used in mines

2020-01-30T09:57:00.004-08:00

Classification of explosive-

A) Classification as per Indian explosive Rules:-

Class 1 - Gunpowder
Class 2 - Nitrate mixture
Class 3 - Nitro compounds
Division 1-Blasting geletine, special geletine.
Division 2 - P.E.T.N., TNT, Primax, etc.
Class 4 - Chlorate mixture
Class 5 - Fulminate
Class 6 -
Division I - safety fuse, igniter cord, safety electric fuse,etc

Division II - plastic igniter cord, detonating cord/fuse, electric fuse,etc.

Division III - detonator, delay detonator, electric detonator, relay.

Class 7 - Fire works.
Class 8 - Liquid oxygen explosive (LOX)

B) Classification Based on risk involve in initiation:-

Category X - explosive having fire or slight explosion risk

Category Y - explosive having a mass fire risk or a moderate explosion risk not the risk of mass explosion.

Category Z - explosive having a mass explosion risk and messile effect.

C) On the Basis of strength:-

i) Low explosive - Gunpowder
ii) High explosive - Slurry, Emulsion, Dynamite, etc.

D) Classification on the Basis of use -

i) Permitted explosive - for use in u/g gassy coal or non-coal excavation.

ii) Non permitted explosive -

a) small dia (NPSD) - for use in hole of 32mm dia, drill by manually or by jack hammer.

b) large dia (NPLD) - for use in hole of 100 mm dia.

E) On the Basis of sensitivity of an explosive to initiation by a detonator :-

i) Cap sensitive - are those explosive which can be detonated by a No.8 detonator.

Example- all permitted, all non permitted small dia, large dia booster, primers, etc.

ii) Non Cap sensitive - are those explosive which can not be detonated by detonator and need a cap sensitive explosive for detonation.

Example - ANFO, Large dia column charge.

Slurry Explosive | composition of slurry explosive

2020-01-30T09:51:00.003-08:00

Slurry Explosive -

it is a mixture of super saturated aquas salt solution (mainly ammonium Nitrate or Sodium Nitrate) & water (15%). This chemical mixture is thickened with guar-gum and cross linked. This enables to prevent leaching of the soluble oxidizing salts by the presence of water in the blasthole. This make slurries or water-gel excellent. The most commonly used fuel sensitizers are carbonaceous fuels, ammonium, TNT, and smoke less powder. These fuel sensitizers indentity the types of slurries as aluminized slurry, TNT slurry and smokeless powder slurry. Excess sensitizer also causes an oxygen deficiency in the mixture.

Slurry Explosive

Composition of slurry-

Ammonium nitrate - 30-50%
Sodium nitrate - 5-15%
Water - 10-25%
Fuel. - 2-5%
Flake aluminium - 2-5%
Mono methyl ammonium nitrate - 20-30%
Gourgum - 1-3%
Cross linking agent - 0.05-0.15%

Characteristic of slurry explosive-

1.VOD - 3500 - 5500m/s
2. Sensitivity - cap and booster sensitive
3. Impact sensitivity - more than 10kg/m
4. Density - 1.05- 1.6gm/cc
5. Absolute Weight strength - 600 - 1100kcal/kg
6. Relative Bulk strength - 110-150% of ANFO
7. Relative weight strength - 80 - 100% of ANFO
8. Water resistance - Excellent
9. Temperature - 4 °- 100°C
10. Good fume characteristic.

Advantages of slurry explosive-

1. VOD is high.

2. Excellent water resistance.

3. Easy to manufacture.

ANFO Explosive | ammonium nitrate and fuel oil explosive

2020-01-30T09:42:00.002-08:00

Ammonium nitrate- Fuel Oil (ANFO) -

ANFO is a mixture of AN prills and fuel oil. In which AN acts as the fuel. The sensitivity and the performance of ANFO depends upon the quality of prills.

Composition-

Ammonium Nitrate- 94.3%
Fuel Oil. - 5.7%

-ANFO is also known as Nitrocarbonitrate. Which is called NCN in short.

Characteristic property of ANFO-

1. Velocity of detonation (VOD) - 2000 - 4000m/s
2. Impact sensitivity is - 3 to 3.5 kg/m
3. Density - 0.8 to 1.8 gm /cc
4. Absolute weight strength (AWS) - 930KCal/kg
5. Relative weight strength (RWS) - 100%
6. Relative Bulk strength (RBS) - 100%
7. Water resistance - Poor
8. Hydrophobic in nature.
9. Size of the its solid molecules - 2mm
10. If Al Powder is added into ANFO then Al-ANFO is form.

Advantages of ANFO-

1. Low cost.
2. Suitable for dry holes.
3. Handling is safe.
4. No Required to magazine storage
5. Loading is easy of its free flowing nature.

Disadvantages of ANFO-

1. Water resistance is poor.
2. Not suitable for hot holes.
3. High energy primers are required.
4. Not suitable for small dia holes.
5. Not suitable for sleeping in holes.

Gunpowder Explosive | low explosive

2020-01-26T11:43:00.003-08:00

Low Explosive-

Low explosive- it is the mechanical mixture of finely ground combustible substances those are mixed by ignition and have heaving effect. the process of combustion due to ignition of the combustible material is from grain to grain.there is gradual build up of pressure with the gradual increase in the volume or gases produced due to grain to grain combustion.

Example-Gunpowder.

Gunpowder Explosive

Gunpowder explosive- it is low explosive. Which is the oldest form of explosive. This is the mixture of Potassium Nitrate or Sodium Nitrate ,Carbon and sulphur, the ingredients being finely ground and intimately mixed.
Gunpowder is initiated with sparks from a safety fuse or electric ignitor fuse. And after ignition it liberates large volumes of smoke and poisonous gases, alongwith a long hot flame. The product of gunpowder explosion contains CO2, CO, N2, H2S, CH4, Hydrogen and a small quantity of solids.

Gunpowder Explosive

Composition of gunpowder-

Potassium Nitrate or Sodium Nitrate - 75%
Charcoal - 15%
Sulphur - 10%

Advantages of gunpowder-

1. Low cost.
2. It can be ignited by safety fuse.
3.Low vibration produced.
4.They are very safe to handle.
5.Storage of Gunpowder is safe.
6.Charge can be prepared at face.

Disadvantage of Gunpowder-

1. It cannot be used in gassy mine.
2.it is affected by water, so it can't be used in watery holes.
3.it is bulky and troublesome to carry.
4.V.O.D.(velocity of detonation) is low.
5. Burning speed of explosive is low compare to high explosive.
6. It produces high amount of smoke.

Explosive | What is explosive

2020-01-26T10:50:00.002-08:00

Explosive

Explosive - explosive is a solid liquid or mixture of substance those containing large chemical energy that can be quickly converted into heat,gas and mechanical work in very short period.

Types of Explosive-
There are two types of explosives in use -
1.Low explosive 2.high explosive

Low explosive- it is the mechanical mixture of finely ground combustible substances those are mixed by ignition and have heaving effect. the process of combustion due to ignition of the combustible material is from grain to grain.there is gradual build up of pressure with the gradual increase in the volume or gases produced due to grain to grain combustion.
Example-Gunpowder.

Low explosive

Advantage of Low explosive-
1.low cost.
2.ground vibration is low.
3.It can be ignited by safety fuse.

Disadvantage of Low explosive-
1.V.O.D.(velocity of detonation) is low.
2.It can't be used in watery holes.
3.high amount of smoke produced.

High Explosive- high explosive is the chemical explosive compounds mixed mechanically when detonated undergo instantaneous chemical decomposition and reaction to produce enormous amount of gases building sudden high pressure in confinements which cause shattering affect. The main constituents of high explosive are the chemical compounds which are explosive themselves by nature. These chemicals are mixed with other combustible materials. When such mixture is blasted by detonator, the chemical compounds and the combustible instantaneously undergo chemical decomposition and chain reactions start. The decomposition and chain reaction produce 2000 times -4500 times the volume of gases.
Examples- TNT, ANFO, Dynamite, Nitroglycerin, etc.

High Explosive

Advantages of High explosives-
1. V.O.D.(velocity of detonation) is high.
2.It produces low smoke.
3.Blasting performance is very good.
4.Excellent water resistance.
5.Batter fragmentation is achieved.

Disadvantage of Low explosive-
1.Cost of explosive is high.
2.It produce more ground vibration.
3.Produce more amount of dust.

What is Under Ground Mining

2020-01-09T02:37:00.002-08:00

Under Ground Mining

Underground mining- are those mining operations which are done below the Earth surface is known as Underground mining. in underground mining gestation period is high because of we need to make mode of entry by which we access to the ore or seam.

Condition for choice of U/G mining-

→for higher depth Ore or Coal deposit.
→Depends on the depth of ore or coal seam
→depends on the stripping ratio.

Under Ground Mining

Mode of Entry-

1. Incline
2. Shaft
3. Adit

Advantages of Underground Mining-

1.Ground Vibration is low.
2.Work not affected by weather.
3.No need of overburden removal.
4.Less danger of fly rock.
5.No destruction of forest is needed.
6.Ecosystem is not disturbed.
7.It can be applicable for Higher depth.
8.The soil and Agriculture land is destroyed in open cast mining but not in case of Underground mining.
9.Cost of explosives is high compare to Open cast mining.
10.Safely working near the permanent structure by the help of stowing.

Disadvantages of Underground Mining-

1.Production is limited in underground mining.
2.Safety is less compare to Opencast Mining.
3.Percentage of extraction is less compare to Opencast Mining.
4.Mechanization is limited.
5.Working area is limited.
6.Long Gestation period.
7.Overall cost of production is high.
8.Danger of roof fall, gas explosion, Subsidence, etc.

Read also Advantage and disadvantages of Opencast mining

What is Open Cast Mines

2020-01-08T14:30:00.003-08:00

What is Open Cast Mines

Open Cast or Open pit mines- Open Cast or open Pit mining is a method of mining in which first removal of overburden is done and there after layers of ore or mineral to be excavated.

Open Cast Mines

Condition- for shallow or limited depth

Mode of Entry -

1.Single entry
2.Double entry
3.Spiral entry

Read Full post on Types of Entry in Opencast mines

Major equipment-

Dragline, Shavel, Bucket Wheel Excavator, Surface Miner, Front End Loader, Excavator, Dumper, etc

Advantages of Opencast Mining-

1.Percentage of extraction is high compare to U/g mining.
2.High mechanization is possible.
3.Production can be regulate as per requirement.
4.Working is safe compare to Underground mining.
5.No need to left Ore or Coal as a support purpose.
6.Gestation period is low.
7.No any danger of subsidence.
8.No any danger of roof fall.
9.Woman can be employed in open cast mines.
10.Natural ventilation is available.
11. No need of artificial lighting in Day time.

Disadvantages of Opencast Mining-

Disadvantages of Opencast Mining-
1.Work is affected by the weather.
2.It is limited for higher depth.
3.Cost of explosives are high.
4.Open cast mines blasting induced ground vibration is high.
5.Cost of mechanization is high
6.The soil and agriculture land are destroyed in open cast mines.
7. Deforestation of large area.
8.It is limited by Stripping Ratio.
9.Fly rock problem is high in open cast mining.
10.Cost of machineries is high.

Read also What is mining and its classification

SAIL APPRENTICE VACANCY | BHILAI STEEL PLANT APPRENTICE VACANCY

2020-01-07T04:29:00.000-08:00

SAIL APPRENTICE VACANCY

SAIL India Ltd is a largest steel producing company. SAIL {Bhilai Steel plant} invite's the Diploma and degree pass out candidate for 1 year Apprenticeship training.

Total Posts-358
For Diploma Candidate-204
For degree (B.E. or B.Tech) candidate-154

👉Stipend -

9000/month for-Degree candidates
5000/month for- Diploma Candidate

BHILAI STEEL PLANT APPRENTICE VACANCY

Total Post are-

Total Posts-358

For Diploma Candidate-204

For degree (B.E. or B.Tech) candidate-154

Download Official Notification

Post distribution for Degree candidate

Post distribution for Diploma Candidate

Branches-

Mining Engineering, Mechanical Engineering,Civil Engineering, Electrical Engineering, Computer science/IT , Chemical engineering, Electronic Engineering, Ceramic Engineering,etc

Last date to apply-20.01.2020

How To Apply-

Types of entry in Open Cast mines

2020-01-06T10:55:00.003-08:00

Types of entry in Open Cast mines

There are three types of entry for open cast or pit mines

1.Single Entry

2.Double Entry

3.Spiral Entry

Types of Open Cast mine Entry

Click here to Download Pdf notes

Types of Open Cast Mine Entry

open cast mine entry

MINING GURUKUL

CMR 2017 MCQ

Top 10 MCQ in Mining Engineering

Algorithms of Blast Design | Application of Computer in Mining

Algorithms of Blast Design:-

Remote control operation in mining

Various types of mining methods

Introductin To Mining

Wire Rope | Classification Of Wire Rope | Mine Machinery Hindi Notes

Classification of wire Rope-

1. बनावट के आधार पर (Classification on the basis of construction)-

3. कोर के आधार पर (On the basis of Core)-

4.On the basis of laying arrangements-

1. बनावट के आधार पर (On the basis of construction)-

MINING ENGINEERING NOTES || Mining Gurukul

SECL TECHNICHIAN APPRENTICE(PDPT) UPDATE || SECL || PDPT 2020

Classification of methods of Stoping methods || metal mining

REVISED NOTICE FOR TECHNICIAN APPRENTICES SELECTION 2019-20

IOCL TECHNICIAN AND TRADE APPRENTICE VACANCY | INDIAN OIL CORPORATION LIMITED || TECHNICIAN AND TRADE APPRENTICE VACANCY

INDIAN OIL CORPORATION LIMITED(IOCL)

TECHNICIAN AND TRADE APPRENTICE VACANCY

1.Vacancy Details-

02.Qualification-

04.Age limit - as on 29-02-2020

05. Important Links-

Csvtu Diploma Mining Engg. question paper || CSVTU || mininggurukul.com

NCL HEMM Operator Vacancy || Northern Coalfields Limited HEMM TRAINEE

NCL HEMM Operator Vacancy-

1.Minimum Qualification/ Vacancies:-

2. Age Limit:

3. Important Dates:

4. Examination Fee:-

5.Minimum Cut-Off Marks-

ALL HEMM POSITIONS OTHER THAN DRAGLINE OPERATOR (TRAINEE)

100

(Common Paper of 100 Marks)

SC/ ST/ ESM/ OBC-NCL

DRAGLINE OPERATOR (TRAINEE)

150

(Common Paper & Additional Technical paper of 50 marks)

Secondary Blasting | Secondary Blasting in mines

Secondary Blasting

GATE MINING QUESTION PAPER || GATE QUESTION PAPER

Classification of explosive | explosive used in mines

Classification of explosive-

Classification of explosive-

A) Classification as per Indian explosive Rules:-

B) Classification Based on risk involve in initiation:-

D) Classification on the Basis of use -

E) On the Basis of sensitivity of an explosive to initiation by a detonator :-

Slurry Explosive | composition of slurry explosive

Slurry Explosive -

Composition of slurry-

Characteristic of slurry explosive-

Advantages of slurry explosive-

ANFO Explosive | ammonium nitrate and fuel oil explosive

Ammonium nitrate- Fuel Oil (ANFO) -

Composition-

Characteristic property of ANFO-

Advantages of ANFO-

Disadvantages of ANFO-

Gunpowder Explosive | low explosive

Low Explosive-

Gunpowder Explosive

Composition of gunpowder-

Advantages of gunpowder-

Disadvantage of Gunpowder-

Explosive | What is explosive

Explosive

What is Under Ground Mining

Under Ground Mining

Condition for choice of U/G mining-

Mode of Entry-

Advantages of Underground Mining-

Disadvantages of Underground Mining-

What is Open Cast Mines

What is Open Cast Mines

Condition- for shallow or limited depth

Mode of Entry -

Major equipment-