Date: | 1939 |
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Description: | International PA-100 power unit operating a Pomona water pump in a lead and zinc mine. A box labeled "dynamite" is in the foreground. |
Date: | |
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Description: | View down railroad tracks that lead to industrial buildings and a smokestack. A caption on the image reads, "Zink (Zinc) Works, Mineral Point, Wis." |
Date: | 1909 |
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Description: | Exterior view of a diamond drill outfit on Presque Isle River. |
Date: | 1909 |
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Description: | Several men standing next to gears and machinery inside a diamond drill outfit. |
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