ARLINGTON, Va. (AP) - Federal mining regulators issued 255 citations during the latest round of monthly impact inspections.

The U.S. Mine Safety and Health Administration said Tuesday it also issued 13 orders and two safeguards following inspections at 11 coal mines and four other mines in August.

MSHA said it issued 10 citations and six orders following an impact inspection at D & C Mining Corp. in Harlan County, Ky. Among the violations, inspectors cited an accumulation of combustible materials, a failure to comply with the roof control plan and failure to perform a daily calibration test of multi-gas detectors.

The inspections began in 2010 after the Upper Big Branch mine explosion in West Virginia that killed 29 coal miners.

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