Unsafe chambers?

THE Western Australian Department of Mines and Petroleum is worried some underground refuge chambers may not have been maintained properly and will not be able to work appropriately.

Unsafe chambers? Unsafe chambers? Unsafe chambers? Unsafe chambers? Unsafe chambers?

Fears abound that underground safety chambers are not as safe as they should be.

Its 2013 guideline on underground refuge chambers is that each chamber have a design operating capacity of no less than 36 hours for occupants when operating as a standalone unit.