The government ordered a $420,300 fine after finding safety violations at a Utah coal mine.
Federal regulators say they assessed the fine against Andalex Resources Inc. for accumulations of coal dust and hydraulic oil on equipment at the Aberdeen coal mine in 2006 and 2007. The mine is near Price in Carbon County.
The government says dust and oil made the mine vulnerable to fire and explosion.
The Mine Safety and Health Administration says Andalex is controlled by Bob Murray, chief of Murray Energy Corp. The company is co-owner of the Crandall Canyon mine, where nine people died during two cave-ins in August.
There was no immediate response from Murray Energy.