. The Cuba review. Cuba -- Periodicals. 20 THE CUBA REVIEW. An Aspect of the Plant and Headframe of the "Cridad" Copper Mine. many years, but in a casual or erratic manner, and it is impossible to pass an opinion on it from the result and the conflicting reports of the prospectors who refer to the importance of the field according to the success with which they have met. The fact remains that the lack of transportation facilities has been a great drawback for this zone, and it will not be surprising to hear of some great mining development in this region as soon as the Nuevitas-Caiba
. The Cuba review. Cuba -- Periodicals. 20 THE CUBA REVIEW. An Aspect of the Plant and Headframe of the "Cridad" Copper Mine. many years, but in a casual or erratic manner, and it is impossible to pass an opinion on it from the result and the conflicting reports of the prospectors who refer to the importance of the field according to the success with which they have met. The fact remains that the lack of transportation facilities has been a great drawback for this zone, and it will not be surprising to hear of some great mining development in this region as soon as the Nuevitas-Caibarien Rail- road, now being constructed, crosses this zone. ^' North of the belt, and more towards the central part of the Province, the immense iron deposits of the Mayari type occur. The ore occurs in different forms; brown hematite is very common, but the most important deposits are those ferruginous earth mantles, averaging 15 and 25 feet in depth and extending over many square kilometres of the surface. This ore, like its Mayari kindred, is a laterite formed in place by the laterization of the serpentines; the ore carries almost invariably a noticeable percentage of nickel which at times exceeds 2%, is very low in phosphorus and sulphur, and it runs as high as 55% of metallic iron, and higher in places. It is estimated that the tonnage exceeds 500,000,000 tons. Right in the centre of the Province, and around the north and eastern sections of the prairie surrounding the City of Camagiiey, 9 kilometres away, there are some very important chromite deposits with an estimated tonnage in sight, and to put it in graphical language, above the prairie grass, of over 20,000 tons of 34% Cr2''3, that is sesquioxide of chrome, with small nickel contents. Further to the northeast, and at distances varying from 3^ kilo- metre to 2 kilometres, there are other deposits with over 50,000 tons of similar and higher grade chrome; among these a hill about 10 metres high and some 100 metres in di
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