In the 20th century two new economic actors rose to prominence in Chile; the state and capital from the United States. Beginning in 1905 United States-based companies came to develop and control copper mining in Chile. The main companies were; Anaconda Copper in control of Chuquicamata, Kennecott Copper Corporation in control of El Teniente and Andes Copper in control of Potrerillos. Between the 1910s and 1930 United States investments in Chile had a tenfold increase, the bulk of which was directed to mining activities.