According to a US Securities and Exchange Commission filing by the producer released this week, its CAM Mining subsidiary was cited February 4 after two contractor carpenters were witnessed working 10 feet above ground on the roof of a structure at Mine 28 without being tied off.

“The carpenters were immediately instructed to safely climb down to the ground level where they received further safety training,” the company said, noting the actions terminated the order for the Pike County operation.

No injuries were reported as a result of the condition.

Rhino did not issue any further public statement on the federal order.

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.

Kentucky-based Rhino announced in December it had received approval on a permit application for its first underground coal operation in Illinois.

The Illinois Department of Natural Resources granted approval to Rhino subsidiary Taylorville Mining for a mine near Taylorville, which contains 285 million tons of company-controlled proven and probable steam coal reserves.

Close to 109.5Mt of those reserves are located in Rhino’s Taylorville field.