Yes. Concrete floor. Darned auto-spelling programs. Thanks for letting me know. And thanks for the advice on having a soft pad.
Thanks to all for the input. I got some acetone to clean green goo from a coin but have been hesitant about using it. I take this as a consensus.
Next time use your thumb and fore finger.......a lot less stress and a sure way to perpetuate a grand 'grab......... 'butter fingers'.......
No reason to. It's no worse than getting a little paint thinner on your hands when cleaning paint brushes, or gasoline when you're gassing up your lawn mower. Just don't drink it, don't huff it, and don't light matches around it. You'll be fine.
Just remember this, literally millions of women put it on their fingers on a daily basis and have been doing so for as long and you and I have been alive - finger nail polish remover. It may not be pure acetone, but it's acetone. And pretty much every painter (as in house painters) on the planet, gets the pure stuff all over themselves on a daily basis as well while trying to clean the paint off their skin. And they have been doing so for longer than anyone here has been alive.
Yes even myself. I literally cut my teeth on a paint brush. Over the years I've used countless gallons of acetone on my own skin.
When I was cleaning/dipping my nice Trade Dollar several years ago, I was being too careful in handling it. And dropped it TWICE, yes TWICE into a concrete sink. Silver does make a nice sound though when clanging around. https://www.cointalk.com/threads/1876-trade-dollar-get-it-cleaned.276689/
When I work with raw coins of much value, I spread out a terrycloth bath towel. Then put a thin, new, 10-gal trash bag on that. Dropped coins don't roll or bounce, and the working surface is clean and inert. Cal
I'm not 100% confident that those plastic bags are 100% inert, but they're likely better than anything else the coin would land on instead. Good technique, I may try it myself.
They're low density polyethylene (LDPE) and have no plasticizer. LDPE and HDPE are used extensively for medical gear that goes into the body, or holds/conducts fluids that go into the body. Not saying trash bags should go into the body ... .... , but pretty inert anyway. Cal
I just wondered if they were coated with anything to help them separate. Based on my experiences trying to pry them out of the box and then worry them open, I'm guessing the answer is "no".
HDPE is used for water pipes too, small service lines as well as mains. I've put miles of HDPE pipe in the ground.