Title | Date | Type | ||
---|---|---|---|---|
1 |
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Denver Rock Drill Co., Copy of Drill Sharpener Machine | 1923-01-31 | Image/StillImage |
2 |
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Denver Rock Drill Co.Copy of Drawing | 1924-05-13 | Image/StillImage |
3 |
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Denver Rock Drill Mfg. Co., Copy of Blue Print Section of Oil Furnace for Drill Sharpening Shop | 1924-06-14 | Image/StillImage |
4 |
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Denver Rock Drill Mfg. Co., Copy of Blue Print Section of Oil Furnace for Drill Sharpening Shop | 1924-06-14 | Image/StillImage |
5 |
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Denver Rock Drill Mfg. Co., Copy of Blue Print Section of Oil Furnace for Drill Sharpening Shop | 1924-06-14 | Image/StillImage |