The Rhodesian Selection Trust (RST) was a mining corporation which produced copper from the Copperbelt region of Northern Rhodesia, now Zambia. The RST was formed in 1928 by Alfred Chester Beatty, an Irish-American mining magnate, as a holding company for his mining assets in Northern Rhodesia. The new company received the financial backing of the American Metal Company of New York.
References
Rhodesian Selection Trust Wikipedia(Text) CC BY-SA