Wyatt Earp worked to extract minerals from a vein and he was American.
"In 1916 Earp went with his friend Jack London, whom he knew from Nome, to visit the set of former cowboy, sailor, and movie actor-turned-film director Raoul Walsh, who was shooting at the studio of Mutual Film conglomerate in Edendale, California
 To date, no reason has been uncovered for the bias Frank Waters exhibited against Wyatt Earp and his brothers

