Did pine-beetle sawdust cause Prince George sawmill explosion?

Another deadly sawmill explosion will occur in B.C. unless wood dust is scooped up with specially designed equipment, says an engineer familiar with the problem.

``An explosion will happen again. Maybe tomorrow or six months from now,'' said Wayne Winkler.

He was commenting on similarities between two blasts in B.C. that have killed four workers and destroyed two plants in the past three months.