514 F. H. Hatch — The Iron Ore Supplies of the World. 



The amount of ore ultimately to be recoverable will depend on 

 the engineering skill that can be brought to bear on the problems 

 of ventilation and pumping that such extensive submarine mining 

 will present. E. C. Eckel estimates the economically workable ore 

 at 3,500 million tons of 50 per cent ore within a radius of 5 miles 

 of Bell Island. Newfoundland was credited with 3,635 million tons 

 in the Stockholm Report. 



Canada. 



Very little is known regarding the iron resources of the Dominion. 

 Of the If million tons of iron-ore smelted in Canadian blast-furnaces 

 in 1919, only 5 per cent was of domestic origin, the balance coming 

 from Lake Superior mines in the United States and from the Wabana 

 mines of Newfoundland. The domestic ores are sedimentary 

 haematite ores from Nova Scotiaj magnetite from New Brunswick, 

 Eastern Ontario, Quebec, and Texada Island, in British Columbia, 

 and spathic ore from the Michipicoten district of Ontario. The 

 carbonate ore at the Magpie mine, worked by the Algoma Steel 

 Corporation in the latter district, averages 34 per cent iron for the 

 raw stone, and 50 per cent for the calcined material. The low-grade 

 magnetite deposits worked by the Moose Mountain Company at 

 Sellwood, in Ontario, average 34 per cent iron, but the briquetted 

 concentrates run as high as 63 per cent. 



The total reserves of the Dominion have been estimated at only 

 150 million tons, but with the vast unexplored country in Northern 

 Canada it is hard to believe that big reserves will not some day be 

 discovered. 



South and West Africa. 



Iron-ore of various types are known to exist in South and West 

 Africa. Lateritic deposits similar to those of Cuba, and characterized 

 by a rather high silica and alumina content and small percentages of 

 nickel, chromium, manganese, etc., are common in many parts of the 

 country. One in French West Africa has recently been found to have 

 a reserve of 100 million'tons, and to yield a nodulized product running 

 over 60 per cent iron. Haematite-magnetite deposits associated with 

 Pre-Cambrian rocks occur over large areas ; but they are generally 

 too interlaminated with siliceous material to be workable. This type, 

 however, is stated to be of economic importance in Rhodesia. In the 

 Transvaal there are extensive deposits of low-grade phosphoric 

 ores in the Pretoria Beds, near Pretoria, and at Boskop, near 

 Potchefstroom, which can be used as mixing ores ; but the most 

 valuable deposit yet discovered is a high-grade low- phosphorus 

 haematite with over 60 per cent iron, occurring at Kromdraai, 

 45 miles north-east of Pretoria, which it is proposed to mix with the 

 lower-grade phosphoric ores of Boskop for the manufacture of basic 

 pig at Vereeniging. 



With the existing data no estimate as to reserves can be made, 

 but it appears certain that large tonnages of iron-ore are available 



