Murray blamed the Obama Administration and the natural gas industry for coal's steep decline.
The former mine lands are supporting sustained grazing and wildlife.
It features a solid, heavy-duty steel chassis.
It would also provide funding for the company to start developing the Poplar Grove mine by mid-2017....
The average price of US coal imports during the second quarter 2016 was $US66.30 per short ton.
The company was also able to improve revenue per ton by 9%.
The United Mine Workers' health care and pension funds are facing uncertainty.
Arch still has to get further approvals before it can build roads or expand.
The CCR materials will be placed at the site beginning in early December.
The highwall miner chain is recognised as the industry standard for continuous mining equipment chains....
This production estimate is 2.8% higher than last week's estimate.
The area contained a highly productive geology with in-seam yields of about 90%.