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Postcard

Mining Operations

Date: 1915
Description: Elevated view of mining operations. Caption reads: "'A Busy Corner' of Platteville."
Photograph

Empire Mine

Date: 1920
Description: The Empire zinc and lead mine. Very litle lead is now produced.
Photograph

National Zinc Separating Company Plant

Date: 1925
Description: View across field towards large mounds of raw material at National Zinc Separating Company plant. Industrial buildings are in the background.

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