Search
Search U.S. government technical reports digitized or harvested by TRAIL.
Keyword Search
9 results returnedSearch results
- Recovery of gold from black sand by classifier concentration
- Comparison of methods of gold recovery from black sand
- Methane in California gold mines
- Mining and milling practices at small gold mines
- Power-shovel and dragline placer mining
- Guide to prospecting for lode gold
- Investigation of oxidation systems for improving gold recovery from carbonaceous materials
- An engineering and economic study of a gold mining operation
- How to mine and prospect for placer gold