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The Diamond                   55
vial and in pipes at Rietfontein, near Pretoria. The properties of the Transvaal Mining Com­pany, now the Montrose, were discovered in 1898, as were also those of the Schuller Com­pany; both producing diamonds in profitable quantity, although not comparably with the mines at Kimberley. The Premier (Transvaal) Diamond Mining Company was registered on December 1, 1902, with a capital of £80,000, so that it had been in existence but about two years when it gave the world its record diamond. The Boer War interfered with the development of the mines in the Transvaal. During the year 1899 four companies were registered. After the occupation of the Transvaal by the British, forty-eight companies were registered in the years 1902 and 1903 with an aggregate capital of nearly £2,000,000 sterling.
The new Premier mines are discussed by Mr. Gardner F. Williams in his The Diamond Mines of South Africa, in which he expresses doubt that the rich alluvial diggings which resulted from the open works initiated there betokened rich diamond bearing pipes of blue ground. Al­though the reports of the company showed a large total yield for the number of loads of ground sent to the washing machines, it is