mike1 
mike1 why would you cut up 28 refrigerators with a sawzall.
If your using a regular long box pick up truck, to increase your load capacity install some stakes in the pockets and pull a trailer to make the best use of your fuel.
The roof top AC condenser rads are about 6 / 8 inches thick, I use fine tooth blades to cut the copper ends off. The copper ends are soldered with an alloy with a percentage of silver. Easy to recover the silver via a copper parting cell.
Not all, I've seen some consumer grade AC's were they used epoxy.
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