1945 El Teniente mining accident

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Tombs of workers dead in the smoke tragedy, in Rancagua

The 1945 El Teniente mining accident, known locally as the Smoke Tragedy (Spanish: La tragedia del humo) is the biggest metallic mining accident in the history of Chile. It happened on June 19, 1945 in El Teniente (Chile), which then belonged to Braden Copper Company, and where 355 men died.[1]