CHARLESTON, W.Va. -- A shake-up at the state Department of Environmental Protection has moved the agency's mining director to a new position.Effective Dec. 1, Tom Clarke will be reassigned new duties as an executive assistant to DEP Secretary Randy Huffman.Clarke had served since August 2008 as director of the DEP Division of Mining and Reclamation.In a statement to DEP employees, the agency said that in his new role, Clarke will "deal with environmental matters related to energy development.""Tom will conduct research and report to the Cabinet Secretary on matters ranging from extraction to consumption to renewables," the statement said. "Some of these issues have occupied much of Tom's time since he was appointed mining director."Harold Ward, a 24-year DEP veteran, will be acting mining director until a permanent replacement is named. The statement said Ward "will provide for a seamless transition in the program's leadership."