Quote Originally Posted by patnor1011 View Post
Correct.
Most of them do have Ag or Pd (or some AgPd alloy) inside in form of plating.
I would not say that ceramic eprom are more valuable from precious metal content-wise. They are heavier thus less of them in a kilogram comparing to plastic resin chips.
As you said, it is hard to get to correct value or yield for kilogram that is why I do call them like high, middle or low grade where high is 5g and more Au from kilogram and low is up to 1g Au from kilo.
Welcome to the SMF Pat, while cleaning up and organizing my shop came across two 20 liter pails of IC's that I pyrolyzed last year. The majority of the chips came from telcomm boards when I was removing them some broke open and you certainly could see visible gold.

Now I'm going to find a gold pan and get busy panning for gold, actually I'm going to build an E-Tower which takes less effort than panning. I suppose a blue bowl or a gold wheel would work just as well.