I had a small lot of fully plated chips like those I processed just a couple of weeks ago. They were unused and only about 3/4" long and maybe 3/8" wide. There was 9 ounces total that I quickly crushed a little, and threw into AR. The whole process was about 3 hours start to finish. The fully refined yield was 12 grams. I was ecstatic. They are not very common in my experience, but needless to say, I won't be letting any get past me.