There is a customer who shreds aircraft of the west coast of USA and makes zorba fines. The trial was unfortunately only one container and resulted in 67/3; if you have any customers who might consider a trial there are more loads available.
Another smaller sample was:
ALUM 63.13%
COPPER 2.02%
PCB 0.32%
GARBAGE 2.52%
DIRT 2.52%
GLASS/STONES 26.76%
LOSS: 2.62%