BILLINGS, Mont. (AP) — Federal officials rejected a mining company’s bid for more than 6 million tons of coal beneath a national forest in Utah, marking the third proposed coal sale from public lands in the West to fall through this month, the Interior Department disclosed Thursday.

The failed sales mark a setback in President Donald Trump’s push to revive a coal mining industry that’s been in decline for almost two decades.

The Interior Department rejected the sole bid it received for two tracts of federal coal reserves on the Manti-La Sal National Forest near central Utah’s Skyline Mine because it did not meet the requirements of the Mineral Leasing Act, agency spokesperson Alyse Sharpe said.

The leasing act requires companies to pay fair market value for coal mined on public lands. Sharpe declined to say how much was bid.

The coal tracts were requested by a subsidiary of Utah mining company Wolverine Fuels LLC, which operates the Skyline Mine and other coal mines in central Utah.

Officials had offered a lease on one tract, with 1.3 million tons of coal, during an Oct. 1 competitive sale. The other tract, with 5 million tons of coal, was a modification to an existing lease. The rejected bid covered both tracts, Sharpe said.

Interior Secretary Doug Burgum said two weeks ago that the government will open 13 million acres of federal lands for coal mining. But it’s unclear who would want that fuel as utilities turn to cheaper natural gas and renewables such as wind and solar to generate electricity.