UNT Libraries Government Documents Department - 5 Matching Results
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- A Biological Survey of the Pribilof, Alaska
- Brief summary of the geographic distribution, habits, and habitats of the birds, mammals, insects, arachnids, and chilopods of the Pribilof Islands.
- Notes on the Geology of Upper Nizina River Alaska
- Introduction: It is not intended to give here a full account of the geology of the district but rather to present certain new features that were observed during the season, with enough of the general geology, which is already well known and fully described in other publications, to make them understandable.
- Placer-Mining Methods and Costs in Alaska
- From Scope of Bulletin: "This bulletin gives the results of a study of present conditions in Alaska placer mining, including the methods employed and the costs, and will be helpful to placer miners, engineers, and all others interested in the industry."
- Recent Progress in the Thawing of Frozen Gravel in Placer Mining
- Technical paper issued by the Bureau of Mines over progress made for thawing gravel in placer mines. Different thawing tests are presented and discussed. This paper includes tables, photographs, and illustrations.
- Recovery of Gold from Black Sand Tailings
- Report on the recovery of gold from black sand tailings, based on tests conducted at the U.S. Bureau of Mines' Alaska Station.