As you may recall, the company I work for makes grinding mills for mining and other minerals processing applications. I've followed your posts with great interest since you first started posting in 2003.
. . . I also recalled seeing a primitive ball mill in the processing plant photos you had. Seems like it had wooden bearings. Not surprising given the era. Things have changed quite a bit in that area, but the concept is still the same.
Mark
Wooden bearings? I doubt it: Here is the ball mill:
As always, these photos can be clicked to a larger image. Continue
