My local yard has a shredder, and a crusher (baler), and about 6-8 of the big grapple cranes. Not to mention the smaller stuff like tow motors, etc. Certain stuff they run thru the shredder, white goods I think. Other lighter stuff (tin-light gauge steel) goes into the baler. Setting at the back of these machines are open top semi trailers catching what comes out of the machine. You need good operators for the cranes or they will tear up a lot of stuff, maybe customers vehicles.
The nonferrous goes inside to the smaller scale along with the alum. can scale/baler.
This crane is sorting the prepared from other stuff, but this pile is all heavier compared to tin. Right now you won't find any piles like this as they unloaded a lot of it before the price drop.
Behind the left crane is a crusher baler and the crane is picking out light gauge tin/siding for it. Behind it is another crane feeding the shredder. To the right that crane is feeding a crusher and from there it goes into a semi.
P & M Recycling - Specializing in E-Waste Recycling. 
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