Ski Plattekill, N.Y., installs a used Hall double; Mt Buller, Australia, builds hotel complex; Killington, Vt., increase snowmaking with a new water main; Heavenly, Calif., starts construction of a gondola that will connect the ski area to South Lake Tahoe's downtown and a new two-hotel complex; Steeplechase, Minn., installs lifts and finishes a lodge in preparation for opening this season; Spring Mountain, Pa., replaces snowmaking system; Kicking Horse, B.C., begins an estimated seven-year project to become a major destination resort.