Glitter bombed

I used to paint with enamels. (One thing I was doing was looking into dial repair.) Most enamel materials were stored in glass jars. They are made from some pretty nasty oxides, the worst which is lead. While lead was restricted in the 1990s. Selenium and Cadmium was not. Worse were some of the yellow oxides, these contained Uranium. Gold oxide is red, and commonly used to make red glass Gold does not like to oxidize. Gold leaf is green. Green light passes through pure gold. On the other hand all that glitters is not gold.

One of my co workers at Apple bought a gold mine. He was fascinated with the mining equipment and how it could be controlled with robotics and micro controllers. I pointed to him out that jewelers would file over a scrap of carpet to collect the dust. This would then be sent to the refiner. My co worker did the same thing in the early days of the web advertising for such gold mats, and scrap to run through his mining equipment. I still find it amusing that people will spend thousands on nasty chemicals, just to recover a few dollars of gold from electronics.

Also based on conversations with forum members here, on the chat. I also invested in a Gieger counter. The measurements from a dial only travel a few centimeters, if this gets ingested, it will linger for the rest of your life.

-j

My freind's interest was in the slucing equipment. Which does seem to require a lot of maintenence. I was more impressed with his using the early internet to advertise for scrap material to run through it.

I tried looking the pages up on archive.org, but I can not find any of the later adverts. Just broken links.
-j