[ Ref. Kevin Mayes in 181106 MMDigest ]

In regards to electrical contacts, I worked for a company called
P. R. Mallory Metallurgical Co. which did research and made
electrical contacts as well as resistance welding supplies for
many of the large switch gear companies.  Mallory sold the
metallurgy company to CMW Inc. but they now show only resistance
welding supplies.  See https://www.cmwinc.com/accessories.html 

S. Lee Walker