Press Photo Guard by tunnel entrance at Rock of Gibraltar - mjx96203

Guard by tunnel at Rock of Gibraltar. The "Tunnellers" of the Royal Engineers came to Gibraltar after Dunkirk, August 1940, followed in March 1941 by the Royal Canadian (Tunnellers) engineers. The work now being done follows that of the original tunneller in Gibraltar, Sergeant Ince, of the Corps of Sappers, in 1788, who commenced the famous Gibraltar tunnels during the great siege going on at that time. About 1900, tunnelling was recommenced by the Admiralty and the City Council for water storage. The reservoirs constructed in the depths of the rock were a peacetime marvel. Modern tools and power equipment enable the Tunnellers to go faster, deeper, and by exploratory diamond drilling ahead, to take all advantage of natural formation. The rock broken by blasting is all used. A small proportion goes into concrete-making. A larger share is used in road and aerodrome construction, and approximately half the total rock excavated is used to provide protection to exist...

Photo is undated.

Photo measures 9 x 7.25 inches.