Jason Glass of Shaw GMC Chevrolet Buick is covered in mud after the Rangeland Derby Chuckwagon finals at the 100th Anniversary of the Calgary Stampede Rodeo in Calgary, Alberta, July 15, 2012. Troy Dorchester of Fireside of Cochrane won the race. [Photo/Agencies]

Codey McCurrach (L) of ATB Financial leads Devin Mitsuing of Hodgins Auctioneers to the home stretch during the Rangeland Derby Chuckwagon final day at the 100th Anniversary of the Calgary Stampede Rodeo in Calgary, Alberta, July 15, 2012. [Photo/Agencies]