Ausdrill suffered a net loss of $177 million for the six months to Devember, while NRW was in the red to the tune of $121 million.
Ausdrill said its focus would be on cutting capital expenditure and paying down debt after losing a number of revenue sources, including through the insourcing of BHP Biliton drill and blast operations and the collapse of Western Desert Resources.
The early end of its Edna May mine contract with Evolution Mining was an additional blow.
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