View of cave-in of underground Union Pacific coal mine, Rock Springs, 1930s

Underground coal mining was quite hazardous in the 19th and early 20th centuries. There were periodic cave-ins, coal dust that harmed the respiratory system, and carbon monoxide poisoning from lack of ventilation. There were also gas explosions, fires, and floods to contend with. 

Resource Identifier
CaveIn1
Citation
Photo File: Wyoming-Rock Springs-Industries, American Heritage Center, University of Wyoming
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