If the US miner is found to have mined too close to a large jarrah tree, it would trigger an automatic cancellation of its right to mine much of its lease.
Opposition Leader Peter Dutton is set to unveil the cost of a controversial nuclear power plan should the coalition come to power at the federal election.
Ahead of opposition leader Peter Dutton releasing costs for his nuclear policy this week, for the seventh straight year renewables were the lowest-cost new power generation technology.
