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The Wisconsin lead and zinc district
An illustrated description and historical review of this district. (2500 w.) (No. 77456)
The Wisconsin lead and zinc district
An illustrated description and historical review of this district. (2500 w.) (No. 77456)
The Wisconsin lead and zinc district
Eng Min Jour
1906
Article (Journal)
English
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Milling Wisconsin lead-zinc ores
Engineering Index Backfile | 1917
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|Churn drilling practice in tri-state zinc-lead district
Engineering Index Backfile | 1935
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