Mineral extraction: using water to expose gold-bearing rock at the Transvaal gold fields. Wood engraving, 1889.
- Date:
- 1889
- Reference:
- 29594i
Licence: Public Domain Mark
Credit: Mineral extraction: using water to expose gold-bearing rock at the Transvaal gold fields. Wood engraving, 1889. Wellcome Collection. Source: Wellcome Collection.
