U.S. ski resorts are being warned to check more than 100 chairlifts after engineers identified a design flaw believed to have contributed to an accident that injured seven people at Sugarloaf. Partek Ski Lifts issued the warning operators using certain lifts to check safety components and to pay attention to a particular electrical switch. Engineers believe the wrong switch was used on a lift, causing the mechanical failure last weekend. Seven skiers were hurt. The National Ski Areas Association believes about 170 lifts could be affected by the design issue. There are about 3,500 lifts in the U.S. (AP)

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