Yancoal's acquisition of Coal & Allied represented a major Chinese mining investment.
The incident could have been prevented if water was diverted.
Clive Palmer vows to reopen Townsville nickel refinery.
A large plume drifted over Jerrys Plains after the blast.
Moolarben is one of the company's three Tier One assets.
The regulator had previously prohibited cutting at the longwall because of an earlier coal burst.
Wait almost over for Yancoal, Glencore's coal deal
Moolarben was one of the company's top tier assets performing well during the quarter.
Yancoal refutes the accusations related to the blast.
Yancoal has helped lift Yanzhou's profits
Hunter Valley mine modifications get approval.
Negotiations between Ashton maangement and the union were ongoing.