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Union of India - Section
Section 160 in The Coal Mines Regulations, 2017
160. Velocity of air current.
- The velocity of air current measured in meters per minute at the place shown in column (2) shall be not less than that shown in column (3) for the different seams shown in column (1) of the Table given below:-| Degree of gassiness | Place where velocity of air is to be measured | Velocity of air |
| (1) | (2) | (3) |
| First, second or third degree | Immediate outbye ventilation connection from theface. | 30 |
| First or second degree | (i) 4.5 meters fromany face whether working or discontinued on the intake side ofthe brattice or partition.(ii) 7.5 metersoutbye of the discharge end of an air pipe.(iii) At the maximum span of a longwall face. | 301560 |
| Third degree | (i) 4.5 meters fromany face whether working or discontinued on the intake side ofthe brattice or partition.(ii) 7.5 metersoutbye of the discharge end of an air pipe.(iii) At the maximum span of a longwall face: | 452575 |