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I recently donated old electronic equipment to Tokyo city government. Their plan is to recycle for gold, silver and bronze medals at next year's Olympics. I don't expect it's an economic decision, but it feels good.

https://www.japantimes.co.jp/news/2017/02/01/national/tokyo-...

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Old electronic equipment is the good stuff. The older it is- the better. The manufacturers have now created methods to use less gold. Equipment from the 60s is coveted. Mainframes and old giant mechanical printers have lots of gold in them. Telcom equipment, Rf equipment same thing- lots of easily accessible Noble metals. Today's scrap electronics have much less recovery value but it's still profitable, even in California. If you follow the correct formulas( developed in the 1800s and not a secret) the waste products from this process are not classified as hazardous. Yes it takes time for your reactions to complete but, it's not like you have to babysit this stuff. All the waste is converted into non hazardous elements easily thru cheap effective chemical reactions. I've said too much already but, if anyone can get ahold of a large quantity of cellphones or better yet older electronics from the past century I'd be glad to help you recover your gold thru environmentally legal methods that aren't a secret but are just not well known. Hit me up in my profile

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