Seven Troughs Mining District
The Seven Troughs Mining District is in the Seven Troughs Range.[1][2]
Young (1918) writes: "The sixth plant Fig 5 is the mill of the Darby Reduction Co at Mazuma. It is probably the best attempt of those illustrated to provide an adequate plant for a small district. The mill was equipped with an automatic sampler of the Vezin type ten 1000 lb stamps, a 4 x 17 ft tube mill, Dorr classifier, amalgamating plates, four agitators and an Oliver filter. It contained practically all of the elements of a successful custom plant and was well designed and constructed. What its success has been and how well it has served the Seven Troughs and Mazuma district I am unable to say but details of its past history and present position would be interesting. Someone familiar with the enterprise should present it to readers of the Journal.[3]."
Lincoln (1923) states that the district was organized in 1905. In 1909, the Darby mill at Mazuma started operation and was dismantled in 1918[4].
References
- ↑ Joseph V. Tingley, "Mining Districts of Nevada," Report 47, Nevada Bureau of Mines and Geology, 1998, 2nd Edition. See map for details.
- ↑ Frederick Leslie Ransom, "Notes on Some Mining Districts in Humboldt County, Nevada," USGS Bulletin 414, pp 14-25, 1919.
- ↑ G. J. Young, "Co-operation Among Small Mines," Engineering and Mining Journal, volume 106, p. 813, 1918. Includes photo of the Darby Mill.
- ↑ Francis Church Lincoln, "Mining Districts and Mineral Resources of Nevada," Verdi, Nev.: Nevada Newsletter Publishing Co., p. 216, 1923.
- Adams, W. S., "Cyanide Practice at the Darby, Nevada, Ore Reduction Co.," Mex. Min. Jour. 11 (1910) 75.
- Crehore, L. W., "Modern Cyanide Mill at Mazuma, Nevada," M&EW Sept. 11, 1909.
- Hill507 214.
- StuartNMR 7, 121-2.
- WeedMH. 1183 Delaware M. Co. 1308 Province Ex. Gold M. Co. 1326 Seven Troughs Reorg. Ms. Co.