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William Wheeler Hubbell's patented mode of desulphurizing ores, and extracting gold and silver : patent issued June 4th, 1867 --
Historical Society of Pennsylvania - Closed Stacks Wf* .99
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- Format:
- Book
- Author/Creator:
- Hubbell, William Wheeler, 1821-1902.
- Language:
- English
- Subjects (All):
- Desulfurization--Patents.
- Desulfurization.
- Mining engineering--Patents.
- Mining engineering.
- Gold mines and mining.
- Silver mines and mining.
- Physical Description:
- 7 p. ; 22 cm.
- Place of Publication:
- [Philadelphia, June 11, 1867]
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