![0022:0174: US Bureau of Mines Collection - C-714-BC Pilot-Plant Concentrator From the South: The 30-foot thickener in the foreground is used for recovering water from the tailings for re-use in the concentrator. The three blending bins may be seen to the left. At the right is a freight elevator serving the 2nd and 3rd floors. A fire hydrant may be seen in the foreground. [dup. of 0022:0073a]](https://d8e7jbdw4fu0e.cloudfront.net/4452/cd1d1ac0-d0ec-11ee-9b06-71c46f11a432-wzIJIw9.lg-nt@2x.jpg)
US Bureau of Mines Collection - C-714-BC Pilot-Plant Concentrator From the South: The 30-foot thickener in the foreground is used for recovering water from the tailings for re-use in the concentrator. The three blending bins may be seen to the left. At the right is a freight elevator serving the 2nd and 3rd floors. A fire hydrant may be seen in the foreground. [dup. of 0022:0073a]