EPA widens investigation into Colorado mine-waste spill

DENVER (AP) – The Environmental Protection Agency’s inspector general is expanding its investigation into a toxic spill from an inactive Colorado mine to include questions about whether the agency was following its own rules when it triggered the blowout.
The inspector general’s office said Thursday that it will add more than a dozen lines of inquiry, some requested by Congress and others raised by a review of the spill by the Interior Department.
An EPA-led contractor inadvert