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[Entire Act]
Union of India - Section
Section 163 in The Coal Mines Regulations, 2011
163. Velocity of air current.
- The velocity of air current measured in metres 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:-Table| 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 the face | 30 |
| First or Second degree | (i) 4.5 metres from any facewhether working or discontinued on the intake side of thebrattice or partition;(ii) 7.5 metres outbye of thedischarge end of an air pipe;(iii) at the maximum span of a longwall face. | 301560 |
| Third degree | (i) 4.5 metres from any facewhether working or discontinued on the intake side of thebrattice or partition;(ii) 7.5 metres outbye of thedischarge end of an air pipe;(iii) at the maximum span of a longwall face: | 452575 |