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安大略的埃利奥特(Elliot)湖铀矿山,开凿一个深1805呎的天井,使用天井爬罐,6个月完成,它比瑞典矿山最深的天井深430呎。这个井直径25呎,用作导入新鲜空气的进风井。设计安装900马力扇风机2台,供给井下110万呎~3/分空气,在冬季用7200万BTU/时的加热器。 1973年5月4日开始开凿,用STH—5E型爬罐一台。开始的先进井断面为10×10呎,1973年7月15日两班工作制的二人小组在从开
The Elliot Lake Uranium mine in Ontario, digging a 1805-foot patio, climbs the canopy with a patio and completes in 6 months, 430 feet deeper than the deepest patio in the Swedish mine. The well is 25 feet in diameter and serves as an inlet for fresh air. Two 900-horsepower fans were designed and installed to supply 1,100,000-3 / min of air downhole and 72 million BTU / h of heater in winter. May 4, 1973 began digging, with a STH-5E type climbing tank. The initial advanced well section was 10 × 10 ft. On July 15, 1973, a two-person working group with two shifts worked in the same direction