- Safety committee mines employing 100/more persons ordinarily
- Workmen’s Inspector mines employing 500/more persons ordinarily
- Tripartite safety committee constituted at company level, meeting is held 6 monthly
- CIL safety board
- A & B
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)