![Matthew Brown FILE - A haul truck with a 250-ton capacity carries coal after being loaded from a nearby mechanized shovel at the Spring Creek strip mine near Decker, Mont., Nov. 15, 2016. The mine is in the Powder River Basin of Montana and Wyoming, a sparsely populated region with the largest coal mines in the U.S., which is the front line in the political battle over the fuel. (AP Photo/Matthew Brown, File)](https://mapi.associatedpress.com/v2/items/c8588336bbea4063951562be11dbf271/preview/preview.jpg?s=680x&wm=false)
FILE - A haul truck with a 250-ton capacity carries coal after being loaded from a nearby mechanized shovel at the Spring Creek strip mine near Decker, Mont., Nov. 15, 2016. The mine is in the Powder River Basin of Montana and Wyoming, a sparsely populated region with the largest coal mines in the U.S., which is the front line in the political battle over the fuel. (AP Photo/Matthew Brown, File)
![Kelly Tunney FILE - United Mine Workers of America President Cecil E. Roberts speaks at a rally to celebrate Mitchell Day, a UMWA union holiday, on Friday, April 1, 2016, in Waynesburg, Pa. Roberts on Friday, June 28, 2024, condemned an effort by House Republicans to block enforcement of a long-awaited federal rule directed at curbing workers' exposure to deadly and poisonous rock dust, calling it “a direct attack on the health hand safety of coal miners.” (Kelly Tunney/Herald-Standard via AP, File)](https://mapi.associatedpress.com/v2/items/1c35eaf3d3394fc1b131c64e0672df9e/preview/preview.jpg?s=680x&wm=false)
FILE - United Mine Workers of America President Cecil E. Roberts speaks at a rally to celebrate Mitchell Day, a UMWA union holiday, on Friday, April 1, 2016, in Waynesburg, Pa. Roberts on Friday, June 28, 2024, condemned an effort by House Republicans to block enforcement of a long-awaited federal rule directed at curbing workers' exposure to deadly and poisonous rock dust, calling it “a direct attack on the health hand safety of coal miners.” (Kelly Tunney/Herald-Standard via AP, File)