Some scientists and engineers are raising questions about the ability of steel buildings to withstand a major earthquake. The results of a national earthquake drill suggested that five high-rise steel buildings in Southern California would collapse during an earthquake of a magnitude of 7.8. "When these types of buildings collapse, we could have 1,000 people in them," said Lucile Jones, a U.S. Geological Survey seismologist. "That's something to worry about."

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