Amendment status not verified — confirm the current text below against the official source.
Ventilation:-The employer shall ensure at a construction site of a building or other construction work that all work areas in a free air tunnel are provided with ventilation system as approved by the Director General and the fresh air supplied in such tunnel is not less than six cubic metres per minute for each building worker employed underground in such tunnel and the free-air-flow movement inside such tunnel is not less than nine metres per minute.