Small-scale Placer-mining Methods
| Author | : Charles Freeman Jackson |
| Publisher | : |
| Total Pages | : 60 |
| Release | : 1932 |
| Genre | : Gold mines and mining |
| ISBN | : |
Small Scale Placer Mining Methods
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Federal Placer-mining Laws and Regulations
| Author | : United States. Bureau of Mines |
| Publisher | : |
| Total Pages | : 56 |
| Release | : 1938 |
| Genre | : Hydraulic mining |
| ISBN | : |
Small-scale Placer-mining Methods
| Author | : Chas. F. Jackson |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 1934 |
| Genre | : Gold mines and mining |
| ISBN | : |
Small-scale Placer Mines as a Source of Gold, Employment, and Livelihood in 1935
| Author | : Charles White Merrill |
| Publisher | : |
| Total Pages | : 100 |
| Release | : 1937 |
| Genre | : Economics |
| ISBN | : |
Small Scale Placer-mining Methods
| Author | : Charles F. Jackson |
| Publisher | : |
| Total Pages | : 17 |
| Release | : 1934 |
| Genre | : Gold mines and mining |
| ISBN | : |
Small-scale Placer-mining Methods
| Author | : Charles Freeman Jackson |
| Publisher | : |
| Total Pages | : 58 |
| Release | : 1932 |
| Genre | : Gold mines and mining |
| ISBN | : |
Hand-placer Mining Methods
| Author | : |
| Publisher | : |
| Total Pages | : 20 |
| Release | : 1982 |
| Genre | : Gold mines and mining |
| ISBN | : |
Describes hand placer mining methods suitable for small scale gold mining in Alaska.
Small Scale Methods of Placer Mining and Placer Mining Districts of Washington and Oregon
| Author | : Guy Ernest Ingersoll |
| Publisher | : |
| Total Pages | : 59 |
| Release | : 1933 |
| Genre | : Hydraulic mining |
| ISBN | : |
Mineral Technology and Output Per Man Studies
| Author | : National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.) |
| Publisher | : |
| Total Pages | : 164 |
| Release | : 1937 |
| Genre | : Mineral industries |
| ISBN | : |
