hi , I have been pulling gold plated pins for a while [years] .I think there should a few classes of these pins to the refiner and recoverer. just like junk yards have copper #1 , #2 . I think # 1 pins clean , no solder or crimpon wires # 2 half plated and clean as before , #3 pins with wire stubs no solder , #4 pins with solder. what do you think ? it takes some acid to get rid of solder. ed. :G