Hmm, now that I think of it, our suction units have amalgam separators in them which trap any grit/dust from removal of fillings as we’re not allowed to simply flush this into the sewers for environmental reasons. They’re basically just tubs which fill up slowly with grey sludge. We just empty that into a large bucket which gets collected as clinical waste periodically but sometimes there must be hundreds of ounces in there and if it’s 40% silver.....? 🤔🤔
I need to find a way of recovering this. Damn you mercury vapour!