In a filing this week with the US Securities and Exchange Commission, the producer said the order was given to its Sidney Coal subsidiary by the US Mine Safety and Health Administration on April 24.
Officials said damage to a ventilation control structure across one of the entries at Sidney’s Taylor Fork Energy mine was observed which required the withdrawal of miners.
“Once the damage to the structure was identified it was promptly repaired,” Alpha said, adding that the order was terminated the same day.
No injuries were reported as a result of the condition.
Imminent danger orders are issued by MSHA under section 107(a) of the Federal Mine Safety and Health Act, also known as the Mine Act.
Section 1503 of the Dodd-Frank Wall Street and Consumer Protection Act, amended last July, now requires disclosure of all imminent danger incidents as part of new reporting requirements regarding mine safety.
Sidney, located in Pike County, was one of the complexes Alpha obtained in its takeover of Massey Energy last June.
Since the closure of that acquisition, Alpha controls about 5 billion tons of reserves in central and northern Appalachia, the Illinois Basin and the Powder River Basin.
It is the second largest reserve holder in the nation.
Alpha’s metallurgical coal reserve base is among the world’s largest and highest quality, with assets including about 150 coal mines and 40 preparation facilities.