Front:
DOMUSEUM OF SCIENCE
& INDUSTRY
TROLLEY
WIRE
DANGER
Back:
M-20
MUSEUM OF SCIENCE AND INDUSTRY
Chicago, Illinois 60637
MINING OPERATIONS
Visitors to the Museum's famous Coal Mine see how modern
machinery and technology have advanced mining methods.
They also view a demonstration of mine safety devices..
Distributed by Illinois Distributing Co. 28 S. Stolp Ave., Aurora, Illinois, 60506
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