Arch Coal Inc. has written off as a loss its total $57.7 million investment in a planned coal-to-liquids plant in southern Wyoming but continues to maintain its equity interest in the project, according to a company spokeswoman and a recent report to federal regulators.
The Oglala Sioux Tribe in southwestern South Dakota is invoking federal treaties and...
Platinum and palladium prices dropped sharply Monday on signs that South African mining...
Montana's largest mining company says its precious metals production rose modestly while recycled metal volumes dropped sharply in the first quarter of 2014.
North Dakota Gov. Jack Dalrymple on Wednesday signaled a potential legal challenge to proposed federal rules aimed at cutting carbon dioxide emissions from coal-fired power plants and oil refineries.
North Carolina's governor says he will propose new legislation aimed at strengthening government oversight of coal ash dumps following the massive spill at a Duke Energy plant that coated 70 miles of the Dan River in toxic sludge.
A West Virginia man has been jailed on charges he phoned in a bomb threat to the southwestern Pennsylvania mine where he worked because he couldn't find a baby sitter to watch his 8-year-old daughter during his shift last week.
Speaking to the National Western Mining Conference in Denver, Sen. Joe Manchin said the U.S. Environmental Protection Agency is not being reasonable in proposing that future coal plants reduce the amount of greenhouse gas emissions by capturing and storing carbon.
A U.S. appeals court has overturned a disclosure requirement that public companies must post information about their use of minerals from Congo, where militias linked to atrocities have profited from mining minerals used in electronics, jewelry and other goods.
Arizona Gov. Jan Brewer signed into law a bill that eliminates sales taxes on electricity and natural gas purchased by manufacturers and mining smelters, a move she said was needed to make the state more attractive to large businesses.
A group of Chinese state-owned companies is buying a Peruvian copper mine from Glencore Xstrata Plc for $5.85 billion, adding to a wave of Chinese resource acquisitions abroad.
Federal mine safety officials say the number of mining deaths in the nation totaled 42 in 2013, up six from the previous year.
A new state mine safety rule will require coal operators to install detection systems that automatically shut down continuous mining machines when people get too close.
James River Coal Co. is being allowed to continue its business operations while the company is under Chapter 11 bankruptcy protection.
A Pittsburgh-area coke plant has agreed to upgrade its pollution control equipment and pay a $300,000 fine.
North Carolina regulators are joining with Duke Energy in appealing a judge's ruling on cleaning up groundwater pollution leeching from the company's coal ash dumps.
A major shareholder of a company behind a contentious Alaska mine project announced it was giving its shares away to two Alaska charitable organizations, at least one of which belongs to a larger group that has come out publicly against the project.
A mining company dropped plans to dig a mile-long tunnel for a copper development project near the Smith River after two environmental organizations filed a lawsuit challenging the proposal, state environmental regulators said Monday.
U.S. Steel says its largest mill is on limited production, after a shortage of vital iron ore due to the ice covering Lake Superior had temporarily shut down its furnaces.
James River Coal Co. says it has filed for Chapter 11 bankruptcy protection as part of its efforts to turn around its business.
Rescuers struggled Tuesday to pump water from a coal mine in southern China where 22 miners have been trapped for more than a day.
U.S. Steel has temporarily halted steelmaking at its massive northwestern Indiana mill because the ice-covered Great Lakes have cut off its access to vital iron ore and other raw materials.
Doctors in Peru say at least 15 wildcat gold miners and three police officers suffered gunshot wounds when police moved to reopen the highway that connects Brazil with the Pacific coast.
Duke Energy's chief executive said the company is putting together a detailed plan to clean up nearly three dozen leaky coal ash pits across the state, but that it could take time to complete the task because Duke was taking a "fact-based and disciplined approach" to the problem.
Duke Energy is asking a judge to prevent citizens groups from taking part in any enforcement action that would make the company clean up nearly three dozen coal ash pits across North Carolina.
Duke Energy shareholders are calling on the company's board to launch an independent investigation into issues surrounding a massive coal ash spill that coated 70 miles of a North Carolina river in toxic sludge.
Coal mines in Kentucky would be subject to fewer state inspections under the Senate's budget proposal — a change that safety advocates say would raise the risk for miners, but one the plan's proponents argue is justified given declining mining operations in the state.
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