F. Augustus Heinze

Industrialist during the Gilded Age, copper mining in Butte (Montana), one of the three Copper Kings
smithsonianmag.com

William Boyce Thompson

Copper mining engineer, mining tycoon, industrialist, founder of Shannon Copper Company, Newmont Mining, financier, Republican politician, philanthropist, funded $1 million to the Bolshevik revolution in 1917, director of the Federal Reserve Bank of New York
1869-1930 (61)
miningfoundationsw.org