goldandsilver123
Well-known member
- Joined
- Aug 11, 2015
- Messages
- 209
Has anyone heard of IR tracer that can be melted with impure gold at the mine that will survive the refining process and show in the refined gold bar?
The tracer is a IR pigment that survived the melting process, refining and melting of pure metal. It's supposed to be visible to the naked eye with an 30W IR ~840nm laser as green, red and blue dots on the bar.
The tracer is a IR pigment that survived the melting process, refining and melting of pure metal. It's supposed to be visible to the naked eye with an 30W IR ~840nm laser as green, red and blue dots on the bar.