MORGANTOWN, W.Va. (AP) â¿¿ Efforts to cap a gas well that exploded last week and injured seven workers will likely begin Tuesday.

Department of Environmental Protection spokeswoman Kathy Cosco said Monday the state has reviewed and approved plans to plug the hole that shot flames of burning methane gas for five days.

The fire ended Friday.

Texas-based Union Drilling Inc. was sinking a natural gas well through an abandoned coal mine near Moundsville when it hit methane.

What caused the ignition remains under investigation.

Meanwhile, the state is reviewing all West Virginia operations of the permit holder, AB Resources of Ohio.

The DEP says failures to comply with the permit criteria may have created conditions that led to the blast.

Copyright 2010 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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