sentences:  As a consulting engineer for the Inspiration copper mine and International smelter in Miami, Arizona (1912–1915), owned by Anaconda, he introduced the first froth flotation plant at a major copper works.Also significant was his work, with John Campbell Greenway, in developing the innovative copper-leaching technology with electrolytic refining for ore from the New Cornelia mine at Ajo, Arizona (1911-1916).At Ajo, his fortune was made.