The company is seeking approval under the Operational Allocation Framework.
The Longwall 14 was initially approved with conditions, which the department said were met.
South32 could seek arbitration for Colombian mine fight.
The company produced coal at annualised rate of 6Mt in June.
Further industrial action takes place at Appin as enterprise negotiations are stuck in a deadlock.
Workers near the burst were peppered with coal.
The deputies engaged in protected industrial action.
Funding injection for new MinEX centre to work on deeper drilling technology.
The company's New Acland and Jeebropilly mines were affected.
Eagle Downs has the potential to export 4.5Mtpa of coal from one longwall.
Appin's new team is focused on a culture of productivity.
Silver production also up at Cannington for March quarter.