The Stannous you have presented so far has been dubious at best.Tested all samples with stannous which I also purchased. All my results are posted in REDNECK. None presented strong dark purple, but many presented faint purple that then apparently dissolved back into solution and went clear again. Had 1 sample that turned into dark orange egg yoke, but then also went clear after adding more stannous. I was able to capture maybe a thimble of brown good from SMB methods across all samples. However, when treating waste with copper and processing as i describe above I collected probably 3 more thimbles of brown goo... so now am going to melt this brown goo over the weekend and see what comes of it. The copper cementing produced far more precipitate than the SMB. My best guess is that the gold around here is ultra-micro-scopic (mind you i have it under micro scope, but even then they present as pin heads hard to see clearly... but many of them... probably need to go from 50x to 500x or 1000x to get a visual). Anyway.. to your question... Yes I did.
And the last you did is dissolved Copper and some Copper I Chloride, that is what I think anyway.
If there had been PGMs in solution the Copper pipe would have been flash plated in less than a second or so.
So I'm expecting the results of your tests.
What tests are they going to do?