US Bureau of Mines Collection - Third Floor of the Concentrator
![0022:0181: US Bureau of Mines Collection - C-817-BC Third Floor of the Concentrator: All reagent measuring and mixing is done on this floor and the small subfloor above it. In the center is a 14-foot hydroseparator and to the left is a 7-foot hydroseparator; these are used for disliming and dewatering. In the foregrounds a small conditioning tank, a bench drill, and grinder. Three other conditioners are on this floor behind the hydroseparators. A corner of the concentrator office may be seen on the right. [dup. of 0022:0074a]](https://d8e7jbdw4fu0e.cloudfront.net/4452/52d6f6f0-d0e2-11ee-9b06-71c46f11a432-wzIJIzu.lg-nt@2x.jpg)
0022:0181
US Bureau of Mines Collection - C-817-BC Third Floor of the Concentrator: All reagent measuring and mixing is done on this floor and the small subfloor above it. In the center is a 14-foot hydroseparator and to the left is a 7-foot hydroseparator; these are used for disliming and dewatering. In the foregrounds a small conditioning tank, a bench drill, and grinder. Three other conditioners are on this floor behind the hydroseparators. A corner of the concentrator office may be seen on the right. [dup. of 0022:0074a]