Sawmills on high alert after explosion

B.C. sawmills are on high alert after an explosion that killed two workers in Prince George. CTV's Investigative Unit gets an inside look at a mill determined to keep workers safe.

With a report from CTV British Columbia's Mi-Jung Lee

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  A large fire burns at the Lakeland Mills sawmill in Prince George, B.C., on Tuesday April 24, 2012. (Andrew Johnson / THE CANADIAN PRESS)