Editing Northern Rhodesia — Colonial Geological Surveys 1947–1956

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The post-War development of Lusaka has resulted in a large amount of building, especially in multi-storey blocks. Certain problems are presented by the prevalence over the whole of the commercial area of the town of limestone which is commonly penetrated by sink holes and cavities of variable, often considerable, dimensions; these are seldom readily detectable on the surface without probing, and the water-table, even at low ebb, is rarely more than 8–10 ft. below the surface. Opportunities have been taken by the Public Works Department and by building contractors to seek the advice of the Geological Survey on matters relating to building foundations or drainage problems. Advice, too, has been sought, and given by the Department, on such subjects as the suitability of clays for bricks or tiles, and of rocks for roadstone, railway ballast, or concrete aggregate. Samples of minerals and ores submitted by members of the public, prospectors, and mining organisations were examined throughout the period under review, and, where necessary, analyses were supplied. The valuable help given by the Mineral Resources Division of Colonial Geological Surveys was much appreciated, particularly during the first five years when the Department's facilities for rendering this service were still very inadequate. Progress was also achieved in the designing and building of a new headquarters for the Geological Survey.
 
The post-War development of Lusaka has resulted in a large amount of building, especially in multi-storey blocks. Certain problems are presented by the prevalence over the whole of the commercial area of the town of limestone which is commonly penetrated by sink holes and cavities of variable, often considerable, dimensions; these are seldom readily detectable on the surface without probing, and the water-table, even at low ebb, is rarely more than 8–10 ft. below the surface. Opportunities have been taken by the Public Works Department and by building contractors to seek the advice of the Geological Survey on matters relating to building foundations or drainage problems. Advice, too, has been sought, and given by the Department, on such subjects as the suitability of clays for bricks or tiles, and of rocks for roadstone, railway ballast, or concrete aggregate. Samples of minerals and ores submitted by members of the public, prospectors, and mining organisations were examined throughout the period under review, and, where necessary, analyses were supplied. The valuable help given by the Mineral Resources Division of Colonial Geological Surveys was much appreciated, particularly during the first five years when the Department's facilities for rendering this service were still very inadequate. Progress was also achieved in the designing and building of a new headquarters for the Geological Survey.
 
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'''The Department issued the following publications:'''
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The Department issued the following publications:'''
  
 
Annual Reports 1951, 1952, 1953, 1954, 1955.
 
Annual Reports 1951, 1952, 1953, 1954, 1955.

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