That's a very interesting job RB...
I've been around lots of screening machines in and around the coal mines locally and they're very impressive. It's amazing that humans have devised ways to take certain sizes out of a mixture of things and discard others that are only a millimeter larger.
RP
I've been around lots of screening machines in and around the coal mines locally and they're very impressive. It's amazing that humans have devised ways to take certain sizes out of a mixture of things and discard others that are only a millimeter larger.
RP

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