N'ihe dị ka afọ 1880, Black Diamond bụ ebe a na - egwu kol n'ime obodo.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Malite n'afọ ndị 1880 Black Diamond bụ mpaghara ebe a na-egwu kol n'ime ime obodo, nke Black Diamond Coal Mining Company nke California, nke nwere ma na-arụ ọrụ n'ebe a na-egwupụta ihe. "