$3b mine rehab hit for state

TAXPAYERS may be forced to cover $3.2 billion in coal mine rehabilitation costs because the Queensland government failed to ensure the mining companies allocated enough money to the clean-up. 

A leaked report shows the impact of these inadequate financial assurances just for coal is equivalent to 6.5% of the Queensland government's annual revenue, so there could be major repercussions for the health and education budgets.

Costs could escalate further because the report didn't cover other commodities such as copper, lead and zinc.

The Greens have called for a Senate inquiry into the issue.