SAN FRANCISCO — California lawmakers focused Wednesday on power lines as a cause of devastating wildfires, possibly including a blaze this summer that killed two people and damaged or destroyed 965 structures in the Sierra Nevada foothills. Pacific Gas & Electric Co., the state's largest utility, said in September that a power line rubbing against a tree may have started the blaze that burned 70,000 acres and caused $52 million in damage, becoming the seventh-most destructive in state history.
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