US Bureau of Mines Collection - First Floor of the Concentrator
![0022:0184: US Bureau of Mines Collection - C-818-BC First Floor of the Concentrator: In the center is gang sampler. Behind this s a bank of sand pumps used to transfer finished products to thickeners or intermediate products back into the concentrator circuit. To the right is a sample preparation room. Just visible on the right is one of two conveyors used for transferring filtered material out of the building, or its it is too wet, to a dryer. The rod mill and classifier are just beyond the partition in the back. [dup. of 0022.0074b]](https://d8e7jbdw4fu0e.cloudfront.net/4452/5bcc5920-d0de-11ee-9b06-71c46f11a432-wzIJIBe.lg-nt@2x.jpg)
0022:0184
US Bureau of Mines Collection - C-818-BC First Floor of the Concentrator: In the center is gang sampler. Behind this s a bank of sand pumps used to transfer finished products to thickeners or intermediate products back into the concentrator circuit. To the right is a sample preparation room. Just visible on the right is one of two conveyors used for transferring filtered material out of the building, or its it is too wet, to a dryer. The rod mill and classifier are just beyond the partition in the back. [dup. of 0022.0074b]