Metanor Resources MEAOD

RE:RE:RE:RE:Question on Barry...

[JRaffles]

https://www.stillwatermining.com/operation/mine-site-concentrators.html

Mine site concentrators are located at both the Stillwater and East Boulder Mines. After ore is removed from the mines, it is fed into a concentrator to begin the refining process. This process produces a concentrate that is transported to the Company's metallurgical complex for further refining. The capacities of the concentrators are 3,000 short tons (2,700 metric tons) and 2,000 short tons (1,800 metric tons) for the plants located at the Stillwater and East Boulder Mines, respectively.

The concentrator process begins when ore is fed into the concentrator, mixed with water and ground to a slurry.  PGM-bearing sulfide minerals are liberated from the rock matrix. Reagents are added to the slurry to separate the valuable sulfides from the waste rock.  Sulfide minerals are floated, recycled, reground and refloated to produce a concentrate suitable for further processing. The flotation concentrate, weighing about 2 percent of the original ore weight, is filtered and transported in bins to the Company’s metallurgical complex in Columbus, Montana. Approximately half of the tailings material from this process is returned to the mines and used for backfill to provide a foundation upon which additional mining activities can occur.  The balance is placed in tailings confinement areas.