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DGMS CMR 2026: Latest Changes in Coal Mines Regulations (CMR 2017) DGMS CMR 2026: Latest Changes in Coal Mines Regulations Explained The Directorate General of Mines Safety (DGMS) has introduced important updates under the Coal Mines Regulations, 2017 (CMR) during 2025–26 to strengthen safety, supervision, and statutory compliance in coal mines across India. This article explains only the confirmed changes within CMR , without including draft rules or general safety circulars. 1. Amendment in Regulation 30 – Assistant Manager Provisions DGMS has amended Regulation 30 of CMR 2017 through a Gazette Notification to revise requirements related to Assistant Managers . Key Changes The number of Assistant Managers is now linked to mine production and operational scale High-production coal mines must deploy additional Assistant Managers At least one Assistant Manager must hold a First Class Manager’s Certificate in large mines Impact: Thi...
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Mining Safety MCQ Questions - Part 01 | Indian Minerology
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Mining Safety MCQ Questions - Part 01
⛑️ Mining Safety MCQ Questions - Part 01
1. The main objective of mine safety is:
A. To increase production
B. To ensure worker health and accident prevention
C. To reduce ventilation cost
D. To improve blasting efficiency
Show Answer
Answer: B. To ensure worker health and accident prevention
2. The Mines Act in India was enacted in:
A. 1942
B. 1952
C. 1962
D. 1972
Show Answer
Answer: B. 1952
3. DGMS stands for:
A. Directorate General of Mine Safety
B. Department of General Mining Standards
C. Division of Geological Mining Survey
D. Directorate of Geotechnical Mine Safety
Show Answer
Answer: A. Directorate General of Mine Safety
4. Minimum allowed age for mine workers in India is:
A. 14 years
B. 15 years
C. 16 years
D. 18 years
Show Answer
Answer: D. 18 years
5. Which gas is known as 'blackdamp' in mines?
A. Methane
B. Carbon monoxide
C. Oxygen deficiency (CO2 + N2)
D. Sulphur dioxide
Show Answer
Answer: C. Oxygen deficiency (CO2 + N2)
6. Which is called 'firedamp'?
A. Carbon monoxide
B. Hydrogen Sulphide
C. Methane
D. Carbon dioxide
Show Answer
Answer: C. Methane
7. Primary function of mine ventilation is:
A. To cool equipment
B. To remove harmful gases and supply fresh air
C. To control dust only
D. To dry workings
Show Answer
Answer: B. To remove harmful gases and supply fresh air
8. Permissible limit of methane in general body of air is:
A. 0.25%
B. 0.5%
C. 1.25%
D. 2%
Show Answer
Answer: C. 1.25%
9. Flame safety lamps are mainly used for:
A. Illumination
B. Gas detection
C. Both A and B
D. Dust testing
Show Answer
Answer: C. Both A and B
10. First aid for a person suffering from carbon monoxide poisoning is:
A. Supply of CO2
B. Supply of Nitrogen
C. Supply of fresh air / pure oxygen
D. Induce vomiting
Show Answer
Answer: C. Supply of fresh air / pure oxygen
11. The symbol for refuge chamber in mines is generally:
A. Red square
B. Blue triangle
C. Green rectangle
D. Yellow circle
Show Answer
Answer: C. Green rectangle
12. Dust suppression in mines is achieved by:
A. Blasting techniques
B. Applying water sprays
C. Allowing air to settle
D. Air conditioning
Show Answer
Answer: B. Applying water sprays
13. The personal protective equipment (PPE) compulsory in underground mines include:
A. Helmet with lamp
B. Safety shoes
C. Dust respirator (in specific areas)
D. All of the above
Show Answer
Answer: D. All of the above
14. In case of a mine fire, workers should:
A. Run towards intake airway
B. Run towards return airway
C. Gather coal tools
D. Stay inside goaf area
Show Answer
Answer: A. Run towards intake airway
15. The most important factor contributing to accidents in underground mines is:
ADVANCING AND RETREATING LONGWALLS:- Advancing Longwalls:- In this method, the face start point is close to the main headings, usually leaving a barrier pillar to protect them. Once the face equipment is installed, extraction commences working away from the main headings towards the block limit. Obviously the main and tailgates do not exist prior to the start of extraction and have to be formed at each end of the face as mining progresses. The gate roads are effectively in the goaf and a false rib has to be installed on one side, usually by constructing a small pillar, sometimes using stone cut from the roof in thin seams or using some type of cementitious material brought into the mine. Such gate roads tend to require a very heavy support system (yielding steel arches have often been used). Principle of advancing longwall Advancing longwalls were once common in Europe in relatively thin seams where packs were constructed using stone, which had ...
Which is the deepest mine in India? Which is the deepest mine in India? Mining is all about who well you can dig and how deep you can dig to get the desired mineral. In the process, India have also evolved to innovate methods to dig deep and have constructed one of the world's deepest mines.
Continuous Miner:- Continuous Miner:- A continuous miner is a mining machine that produces a constant flow of ore from the working face of the mine. The machine continuously extracts as it is loading coal with a cutting steel drum and conveyor system. Continuous miners are typically used in room and pillar mining operations. The continuous miner is different from conventional or cyclical mining methods, which halt the extraction process in order for ore-loading to proceed. Continuous miners, which began to take off in the mining industry in the 1940s, make up of 45 percent of the underground coalmine production. Today, continuous miners are being developed as driverless machines controlled via remote control. History:- Early Miners:- The continuous miner has been available in some form since the late 1800s. The first machine to resemble a continuous miner was known as the English Channel Machine. The pneumatically driven machine could travel 1.5 miles (2...
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