Gold prices dropping

Etack,

I am travelling atm and using my phone. It is my understanding, and you can google this, that cadmium oxide is used in the larger contacts because applications with high voltage/amps tend to ark, the cadmium oxide prevents scoring.

http://www.astm.org/Standards/B781.htm

Here is a pdf I have in my dropbox that explains why cadmium oxide is used.

http://db.tt/LlCRVjYV

I am checking into a hotel later. When I get a chance I will post what information I have.



Scott