Read about the California pipeline explosion here.
Federal investigators' findings in the San Bruno pipeline explosion probe suggest that thousands of miles of long-buried and untested natural gas pipelines across the United States are at far greater risk of failure than the industry and government regulators have long maintained, experts say.
"It's a wake-up call," Robert Eiber, a pipeline integrity expert with 50 years of experience in the industry, said of the implications of the National Transportation Safety Board's metallurgical analysis of the line that exploded Sept. 9.
"They need to make sure they don't have a duplicate situation someplace else," Eiber said. "If it has not been tested, you need to test it."
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