Cardinal is owned and managed by Granville S. Henderson, P.Eng., Durck A. de Winter, P.Eng.,  Jonathan Mullin, BSc.Eng. and Mark Tonin, B. A.   Granville, Durck, Jon and Mark enjoy a successful partnership where they all mutually agree on an absolute requirement of quality workmanship, tight project schedules, projects on budget, high safety standards, and a spirit of cooperation on each and every construction project.

 

 

 

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