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Guide to the Erasmus D. Leavitt Papers

8 results in NMAH.AC.0966 for "Copper mining"
Record
Date
Container
Series 3: Engineering Drawings
1874-1906
0205 a, Excelsior copper gaskets, Category L (Hoisting engine Superior)
1884-03-24
5
0426 a, Copper gaskets, Category I (Calumet and Hecla Mine General)
04/12/1884
9
0937 b, Copper elbows, Category K (Torch Lake)
04/09/1886
17
0939 d, Copper elbows, Category K (Torch Lake)
04/10/1886
17
1395, Copper gaskets for cylinder bonnets, Category V (Hoisting Engines "Gratiot", "Houghton" and "Seneca")
08/20/1889
24
2117, Copper gaskets for cylinder bonnets, Category X (Hoisting Engines "Minong" and "Siscowit")
07/09/1890
36
2213, Copper gaskets for cylinder bonnets, Category W (Pumping Engines "Michigan" and "Winnipeg")
10/01/1890
37
2903, Copper gaskets for cylinder bonnets, Category Z (Hoisting Engines "Hancock" and "Pewabic")
09/05/1892
46