Hoover Dam explosion: A look at what’s happened so far - Global News

An investigation into the specifics of what caused the Hoover Dam explosion is ongoing with no specific timeline for its findings, said local authorities.

Equipment failure caused a transformer at the Hoover Dam to explode, causing a fire that lasted about a half-hour and sending plumes of black smoke swirling through the air. Crews quickly extinguish… [+3570 chars]

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