Introduction

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📘 CMR 2017 (Part 3) – Essential Rules for DGMS Exam The Coal Mines Regulations, 2017 (CMR 2017) form the cornerstone of coal mine safety in India.
Part 3 of CMR 2017 deals with General Provisions, Supervision, Safety, and Health — all crucial for DGMS First and Second Class Manager exams (both Restricted and Unrestricted). Understanding this section is vital for safe mine operations and DGMS paper success, as many objective and descriptive questions come directly from CMR 2017 Part 3.

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⚖️ Important Provisions of CMR 2017 (Part 3) Part 3 of CMR 2017 (Regulations 41–118) deals mainly with:

1. Supervision and Control
• Duties of managers, overmen, sirdars, surveyors, and engineers.
• Appointment of competent persons.
• Restrictions on employment of unqualified personnel.
2. Ventilation and Air Quality
• Regulation 153–162: Adequate ventilation, air quantity standards, and dust suppression.
• DGMS Circular 02 of 2025 introduced new air quantity norms for Continuous Miner & Longwall workings.
3. Transport & Haulage
• Regulation 99–103: Transport of men and material, haul road design (Ref. Reg. 101), signalling systems, and braking requirements.
4. Machinery and Electrical Safety
• Regulation 125–133: Standards for installation, maintenance, and use of electrical equipment.
• DGMS Circular 06 of 2024 provides latest electrical training syllabus and safety guidelines.
5. Fire and Spontaneous Heating
• Regulation 119–124: Measures to prevent and control fires in underground and opencast mines.
• Includes sealing, inertisation, and firefighting systems.
6. Health and Welfare
• Rules for medical examination, dust control, sanitation, drinking water, rest shelters, and canteens.
7. Accident Reporting & Investigations
• Every serious or fatal accident must be reported to DGMS within 24 hours (Form IV).
• The manager must submit a detailed report and investigation findings.

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🦺 Safety & Supervision Rules 

  🔹 Duties of Manager

• Responsible for compliance with all provisions of CMR 2017.
• Maintain updated mine plan and risk control measures.
• Conduct daily inspections and ensure reports are recorded.

🔹 Supervision Levels

• Overman supervises groups of workings.
• Sirdar directly supervises workers in each district.
• Competent persons must be appointed for gas testing, blasting, and machinery maintenance.

🔹 Statutory Returns

• Weekly, monthly, and annual returns on accidents, production, and employment to be sent to DGMS and owner.

🔹 Safety Devices

• Approved types of electrical and haulage safety devices mandatory.
• Equipment must have flameproof certification (DGMS-approved).

🔹 Working Conditions

• No person under 18 years to be employed underground.
• Working hours and rest intervals as per Mines Rules 1955.

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📌 DGMS Key Points for Exams

• Reg. 101 → Haul Roads in opencast mines.
• Reg. 119 → Fire precautions.
• Reg. 125 → Electrical safety provisions.
• Reg. 153–162 → Ventilation & Air quality.
• Reg. 166 → Rescue arrangements & training.
• DGMS Circulars 02/2010, 03/2019, 06/2024 → Frequently asked references.

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⚡ Quick One-Liners

• CMR 2017 → Updated from CMR 1957.
• Part 3 = Safety, Supervision & Machinery rules.
• Reg. 101 → Design of Haul Roads.
• Reg. 119 → Fire control & spontaneous heating.
• Reg. 125 → Machinery & electrical installation safety.
• Reg. 153 → Minimum air quantity for ventilation.
• Reg. 166 → Rescue & emergency arrangements.
• Accident report = Form IV → within 24 hours to DGMS.
• Underage employment (<18 yrs) → Prohibited.
• Manager → Legally responsible for compliance.

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✍️ Descriptive Model Answer 

  Q: Explain the essential safety and supervision provisions under Part 3 of CMR 2017. 

  Answer:
Part 3 of CMR 2017 covers supervision, safety, machinery, and health provisions in coal mines.
The manager is legally responsible for enforcing all rules and ensuring safe working conditions.
It defines duties of competent persons, standards of ventilation, electrical installations, haul roads, fire control, and accident reporting.
DGMS circulars and statutory inspections ensure these rules are followed effectively.  

                               Conclusion:
Part 3 ensures safety, supervision, and statutory discipline — making it one of the most critical parts of CMR 2017 for DGMS exams and field safety compliance.

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🎯 25 MCQs – CMR 2017 (Part 3) 

 Q1. Which regulation deals with haul roads in opencast mines?
A. 99
B. 101
C. 105
D. 120
E. 125
Answer: B.
Solution: Regulation 101 specifies conditions for haul roads. 

Q2. Fire precautions in coal mines are covered under:
A. Reg. 95
B. Reg. 101
C. Reg. 119
D. Reg. 128
E. Reg. 160
Answer: C.
Solution: Reg. 119 covers preventive fire measures.

Q3. The regulation related to electrical safety is:
A. 119
B. 121
C. 125
D. 132
E. 150
Answer: C.
Solution: Regulation 125 outlines electrical safety requirements.

Q4. DGMS Circular 02 of 2025 relates to:
A. Fire prevention
B. Ventilation norms
C. Explosives use
D. Surface lighting
E. Slope stability
Answer: B.
Solution: New air quantity norms for Continuous Miner panels.

Q5. Form IV report must be sent within:
A. 7 days
B. 48 hours
C. 24 hours
D. 1 week
E. 12 hours
Answer: C.
Solution: Accidents must be reported within 24 hours.

Q6. Age limit for underground employment:
A. 16 years
B. 18 years
C. 20 years
D. 21 years
E. None
Answer: B.
Solution: No person under 18 allowed underground.

Q7. CMR 2017 replaced which previous regulation?
A. CMR 1955
B. CMR 1957
C. CMR 1961
D. Mines Act 1952
E. None
Answer: B.
Solution: CMR 1957 replaced by CMR 2017. Q8. Rescue arrangements are covered under:
A. Reg. 166
B. Reg. 150
C. Reg. 90
D. Reg. 99
E. Reg. 102
Answer: A.
Solution: Reg. 166 covers rescue stations and equipment.

Q9. The mine manager’s duty is defined in:
A. Reg. 18
B. Reg. 40
C. Reg. 41
D. Reg. 99
E. Reg. 110
Answer: C.
Solution: Reg. 41 covers duties of manager. Q10. DGMS circular on slope stability:
A. 03/2019
B. 02/2010
C. 01/2020
D. 10/2020
E. 06/2024
Answer: B.
Solution: 02/2010 deals with slope & dump safety.

Q11. Flameproof electricals are required in:
A. Opencast only
B. Underground gassy mines
C. Workshops
D. Surface lighting
E. All
Answer: B.
Solution: Flameproof equipment mandatory in gassy mines.

Q12. Dust control rules are included under:
A. Reg. 160
B. Reg. 162
C. Reg. 165
D. Reg. 170
E. Reg. 175
Answer: B.
Solution: Reg. 162 relates to dust suppression & monitoring.

Q13. DGMS Circular 06 of 2024 focuses on:
A. Training of electricians
B. Rescue operations
C. Accident reporting
D. Fire prevention
E. Ventilation standards
Answer: A.
Solution: Electrical safety training circular.

Q14. Maximum haul road gradient allowed:
A. 1 in 10
B. 1 in 12
C. 1 in 16
D. 1 in 20
E. 1 in 8
Answer: C.
Solution: Gradient ≤ 1 in 16.

Q15. Every competent person must hold:
A. Trade certificate
B. DGMS certificate of competency
C. Diploma
D. License from company
E. None
Answer: B.
Solution: DGMS issues competency certificates.

Q16. CMR 2017 applies to:
A. Coal mines
B. Metal mines
C. Stone quarries
D. Both A & B
E. None
Answer: A.
Solution: Applicable only to coal mines.

Q17. DGMS ensures safety compliance through:
A. Audits
B. Inspections
C. Circulars
D. All of the above
E. None
Answer: D.
Solution: All are DGMS functions.

Q18. Lighting in opencast mines must follow standards of:
A. DGMS Circular 03/2017
B. DGMS Circular 10/2020
C. DGMS Circular 02/2010
D. GSR 975(E)
E. GSR 976(E)
Answer: D.
Solution: GSR 975(E) defines illumination standards.

Q19. Regulation 119 relates to:
A. Fire prevention
B. Ventilation
C. Machinery
D. Health & welfare
E. Reporting
Answer: A.
Solution: Fire precautions regulation.

Q20. CMR stands for:
A. Coal Mine Rules
B. Coal Mines Regulations
C. Colliery Management Rules
D. Coal Mining Reports
E. None
Answer: B.
Solution: Coal Mines Regulations.

Q21. Accident investigation is done by:
A. Overman
B. Agent
C. Manager
D. DGMS & Manager jointly
E. Police
Answer: D.
Solution: Joint investigation by DGMS & management.

Q22. DGMS circular on Safety Management Plans:
A. 03/2019
B. 01/2020
C. 02/2015
D. 06/2024
E. 10/2020
Answer: A.
Solution: Circular 03/2019 covers SMP.

Q23. Rescue apparatus testing periodicity:
A. 6 months
B. 12 months
C. 24 months
D. Quarterly
E. Monthly
Answer: A.
Solution: Must be tested every 6 months.

Q24. Maximum limit of incline gradient:
A. 1 in 12
B. 1 in 16
C. 1 in 20
D. 1 in 30
E. 1 in 25
Answer: B.
Solution: 1 in 16 as per Reg. 101.

Q25. DGMS exam questions on CMR 2017 belong to:
A. Management paper
B. Legislation paper
C. General safety paper
D. Ventilation paper
E. Environment paper
Answer: B.
Solution: CMR 2017 forms part of Legislation syllabus.

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