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[–] WhyNoDonuts 0 points 1 point (+1|-0) ago 

This machine is similar to what placer miners use to sort gravel to find gold. No “crusher” visible.

[–] RedBullTrooper [S] ago 

Is this why they look like they are wearing miners clothes, and not striped prison pajamas?

https://en.m.wikipedia.org/wiki/Sonderaktion_1005

[–] WhyNoDonuts ago 

I read up a bit more of what this machine supposedly does, and it had big ball bearings or rocks inside the tumbler - that would make it crush things, but very inefficiently. More like those rock polishers.