Claim: Sunshine Mine (located in northern Idaho, capital Boise) had Newton as the manager and in 1921 Washington purchased a controlling interest in Sunshine Mining Company.
Evidence: The Sunshine Mine is located between the cities of Kellogg and Wallace in northern Idaho. Boise Newton was the manager of the company In approximately 1921 a group of businessmen and entrepreneurs from Yakima, Washington purchased a controlling interest in Sunshine Mining Company.