New Caledonia French French-British Rhodesia British British Asia Minor Turkish Turkish Ural Mountains, Russia Russian Russian-British Greece Grecian Uncertain Serbia Serbian Uncertain India British Probably British Canada British United States-Canadian United States United States United States Brazil Brazilian United States Cuba Cuban United States Japan Japanese Japanese Austria-Hungary Austrian Uncertain Guatemala Guatemalan United States Great Britain and France produce in their colonial possessions chromite enough for their own needs and for export, but the United States, the world’s largest consumer, must depend, except in time of extreme emergency, upon imports, mainly from New Caledonia and Rhodesia. Various countries have from time to time played important rôles in supplying the world’s demand for chromite. One country after another has been displaced, as cheaper or better grades of chromite came into the market. At times these changes were caused by the finding of larger bodies of higher-grade ores than had previously been mined, and at other times they were caused by cheaply transported ores replacing ores inconveniently situated with reference to centers of consumption. Thus, at the beginning of the nineteenth century and up to about 1830, the Ural Mountain region of Russia supplied the major part of the world’s requirements for chromite, which were small. About 1830, important discoveries of chromite were made in the eastern United States, particularly in Maryland, and the United States soon displaced Russia as the leading producer of chromite. After this, for many years, the United States continued to lead in chromite production until about 1870, when the domestic deposits gradually approached exhaustion and important deposits discovered in European Turkey and Asia Minor began to be extensively developed.