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California-Nevada Quake: Why ShakeAlert System Didn't Work Properly
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California-Nevada Quake: Why ShakeAlert System Didn't Work Properly

Seismologists say the ShakeAlert system didn’t work properly ahead of Thursday’s 6.0 magnitude earthquake near the California-Nevada border, but they do know why. Ian Cull reports.

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California-Nevada Quake: Why ShakeAlert System Didn't Work Properly
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California-Nevada Quake: Why ShakeAlert System Didn't Work Properly

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