Stripping Mother Boards and cards with the air chisel has revealed that there is more gold to be had other then fingers, pins and flat packs and cpu's.
The old ISA and PCI plus the long memory slots have a touch of gold on the contacts, under the 386 / 486 cpu socket the contacts are gold plated, the Pentium slots have gold, some of the IC's which are press fit into sockets have gold plated contacts. Dip switches, and the video, parallel and serial port plug ins have gold contacts.
Using the air chisel breaks a lot of the ic's there is gold in a lot of them.
I have collected and disassembled electric word processors, these have gold under the keys, electric cash registers also have gold under the keys.
My hammer mill does a great job liberating the gold from those nasty metal clad video card ports and the like. I now have approximately 20 lbs of various pins and contacts, plus half a 45 gallon drum of pulverized chips and various boards which had gold traces.
I'm going to incinerate the pulverized material before processing, this should reduce it further making the lot more manageable.
After this has been processed, my rewards reaped I'm going to retire from e-scrap precious metals refining.
I do not envy anyone on the forum who claims to have truck loads or a garage full of e-scrap. It has taken me six months to get this far with the junk I have. I want my shop back.