Investigations undertaken for channel tunnel.
VS. Off Dover in the Channel, a French derrick with drilling going on bringing up samples of the channel bed and below. VS. Men going on leave from the derrick are swung out to a tender by means of a crane. LV. Dover Castle, pan to show Dover itself. GV. Exterior of Dover Castle with Union Jack flying. MS. Sign 'Channel Tunnel Investigation Site Office' VS Inside the castle men looking at models and maps of the proposed tunnel workings. VS. In the laboratory the samples of the sea bed are diagnosed under a microscope etc. VS. The tunnel experts standing over looking Dover Harbour. Poor LS. Of Dover Cliffs from a small boat out at sea. VS. Long shots to closer shots as we near the GEM 111 derrick out at sea.