Look west from the office towers of the energy companies that dominate Calgary, and the view is spectacular: rolling prairies rise to tree-clad foothills, with the jagged, snow-capped peaks of the Rockies on the horizon. Looking down, however, is more unsettling. The city is dotted with motionless construction cranes poised over the pits of abandoned projects. A five-year energy boom here in the administrative heart of Canada's oil patch and in the tar sands far to the north has ended. The only debate is how painful and persistent the bust will be-not just for the biggest city in Canada's richest province, Alberta, but for the whole country.
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