MATTAWA, Wash. (AP) -- An explosion at a hydroelectric dam on Washington's Columbia River Thursday injured six workers but did not compromise the dam's structure, officials said....
LISA BAUMANN, Associated Press: Nation
Thu, 10/08/2015 - 9:06pm
MATTAWA, Wash. (AP) -- An explosion at a hydroelectric dam on Washington's Columbia River Thursday injured six workers but did not compromise the dam's structure, officials said....