42. For any development begun on or after 1 April 1993, there shall be clearance of at least 2 m (6.6 ft) above the floor of a drift.
When vehicles are travelling in the drift, there shall be clearance of at least 1.2 m (3.9 ft) above the bench or seat of the vehicle, and when a worker stands upright in the vehicle, the clearance shall be at least 2 m (6.6 ft) above the floor of the vehicle.
This section does not apply to rail car drawpoints in active worksites.
O.C. 213-93, s. 42; Erratum, 1993 G.O. 2, 2603.