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Coll 30/110(3) 'Trucial Coast Oil Concessions: Hinterland Exploration and Survey. Trucial Coast Boundaries. Trucial Coast Surveys 1938-9.'
The file relates to geological survey work carried out by Petroleum Concessions Limited (PCL) (and its subsidiaries Petroleum Development (Trucial Coast) ...1,003 images in record Ref: IOR/L/PS/12/3837 Date(s): 11 Jun 1937-2 Dec 1943