Aging pipelines could increase the threat of major explosions like the one that rocked San Bruno, Calif., killing eight people and destroying multiple homes. "The average transmission pipe is 50 years old," said Carl Weimer, executive director of the Pipeline Safety Trust. "If you put a steel pipe in the ground 50 years ago, you can have problems. It's not the same strength as steel today, and it doesn't have the anti-corrosive coating." The San Bruno explosion has forced other communities to study the safety of pipelines.
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