Subpoenas released today by the Department of the Environment and Natural Resouces show that the U.S. Attorney in Raleigh is expanding its criminal investigation of the coal ash spill at Duke Energy’s Dan River plant to include spills at other company plants across the state, and has identified individuals whose testimony it is requiring before the grand jury on March 18-20.

The subpoena expanding the investigation, dated yesterday, appears below:

By subpoenas dated Feb. 11 (see below) and directed to a number of individuals, the U.S. Attorney is seeking both testimony before the grand jury and documents each individual may have, including documents regarding anything of value each may have received from Duke Energy and Progress Energy since 2009.