Long seen as something of a second-tier resort area, Mammoth Mountain appears headed for the big time. Intrawest, a Canadian company with extensive resort development and operation experience, intends to build 2,300, mostly upper-end housing units and create a new town center in the City of Mammoth Lakes. The idea is to make Mammoth Lakes and the nearby Mammoth Mountain Ski Area competitive with premier all-season resorts such as those in Vail and Aspen, Colorado, Park City, Utah, and Whist...