The Colorado blast that carved a crater and sparked America’s first hazmat rules

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The Pearl Street Dynamite Blast That Shook Boulder

Boulder changed forever just after midnight on August 10, 1907.

A fire broke out at the freight depot near Pearl Street, then spread fast to nearby sheds and rail cars. No one knew that one car held 2,350 pounds of dynamite.

Half an hour later, the blast rocked the entire city. Four people died and 31 more got hurt badly…

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