MORGANTOWN, W.Va. (AP) - West Virginia regulators say they've revoked the permit for a potentially dangerous coal slurry dam that the U.S. Department of Labor wants shut down.

The North Hollow dam in Barbour County is no longer operating. The Department of Environmental Protection says it's working to hire an engineering firm to assess the impoundment and develop a de-watering plan.

Owner Dominick LaRosa of Potomac, Md., has for two months failed to answer a federal lawsuit over the impoundment.

DEP spokeswoman Kathy Cosco said Wednesday the engineering firm will also map the entire permit area and develop guidelines for cleaning up the sediment-control pond.

Cosco says other reclamation activities are planned.

The engineering firm should be chosen by next week, and Cosco says the work should be finished within a few months.

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