The development of domestic chromite supplies means the depletion of limited resources, high cost of production, use of lower-grade ores, and lowered efficiency in consumption. With the free access of high-grade foreign ores, the market for domestic ores, therefore, disappears; and the domestic chromite-mining industry can not survive to any large extent. If world conservation of raw materials or the best use of the world’s resources is of chief importance, the domestic chromite-mining industry should be allowed to decline, and cheaper and higher-grade foreign ores should be allowed to replace domestic chromite. Experience during the past few years has shown that the chromite deposits of the United States, supplemented by imports from Canada, Brazil, and Cuba, can largely supply the domestic requirements for a limited period. The United States controls only a small part of the chromite reserves of the world. American firms own the principal Cuban deposits and control the Brazilian deposits through leases. The United States is, therefore, dependent to a large extent upon the good will of France and England for a continuous supply of chrome ore, these two countries jointly being largely in control of the chromite reserves of Rhodesia and New Caledonia. Turkey controls most, if not all, of the chromite deposits of Asia Minor, but because of their enclosed situation on the Mediterranean, these deposits could not be relied upon as a source of supply in time of need. The same is true of the deposits of the Ural region in Russia. The chief chromite-consuming firms in the United States are the Electrometallurgical Co., probably the largest producer of ferrochrome in the world; the Mutual Chemical Co., and the National Electrolytic Co., large producers of chromium chemicals, and the Harbison-Walker Refractories Co., American Refractories Co., and various steel-making plants, users of chromite for refractory purposes. =Great Britain.=--Before the war Great Britain consumed annually about 25,000 tons of chromite, most of it being used by Blackwell & Sons, Ltd., for the manufacture of ferrochrome. The ferrochrome made in England, however, is not sufficient to supply the needs of the British steel industry, and much is imported from France. Except for unimportant occurrences in the Shetland Islands there are no chromite deposits in the British Isles, and Great Britain is therefore dependent entirely upon overseas sources of supply. British colonies, on the other hand, are rich in chromite deposits, and as long as British ships have freedom of movement on the ocean, they will have access to the more important chromite deposits of the world. Owing to their richness and large size, the most important of all the British-controlled deposits are those of Rhodesia. Only one of many deposits in this area is being operated, and the reserves in untouched ore bodies are undoubtedly large, comparable perhaps with those of New Caledonia.