Cheyenne Republican introduces legislation to increase coal taxes if federal Abandoned Mine Lands Reclamation Program expires.
Wyoming's junior senator appears to have answered President Trump's call to reinvestigate an Obama administration "scandal".
The coal industry's dramatic downturn has raised questions about the ability of companies to follow through with promises to return land and water to pre-mining conditions.
Wyoming is challenging the Obama administration's signature climate change rule on the grounds that it'll hamper efforts to protect the greater sage grouse.
Initial well-integrity report finds gas wells were properly drilled and maintained, more study needed to determine source of water contamination.