 Douglas was given the choice of a flat fee or a ten percent interest in the property for his services, of which he chose the latter, a decision that subsequently made him a fortune.In 1885, Douglas helped negotiate the purchase of the Copper Queen for Phelps Dodge after the Atlanta and Copper Queen both hit the Atlanta ore body, resulting in the formation of the Copper Queen Consolidated Mining Company, with Douglas as president and general manager.Under Douglas, the Copper Queen Mine in Bisbee, Arizona Territory, became one of the top copper producing mines in the world.