BUZZ-Canam Group Inc: Worst day in nearly 2 years
** Canadian construction products maker's shares down 10.7 pct at C$11.79
** Stock falls as much as 11.9 pct, its worst day in nearly two years
** Company says Q2 results to be hit by an after-tax charge of C$32 mln ($24.8 mln) on additional costs for a project
** Company to work with client to resolve the one-time event, impact of which not yet approved by client
** Canam to report Q2 results on Aug. 4
** Up to Wednesday's close, stock had fallen 5.1 pct in past 12 months ($1 = C$1.29)
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