(Africa) Ltd. has been granted four oil concessions in Libya.[34] In 1962, Scottish Oils ceased oil-shale operations.[4] In 1965, it was the first company to strike oil in the North Sea.[35] In 1969, BP entered the United States by acquiring the East Coast refining and marketing assets of Sinclair Oil Corporation.[36] The Canadian holding company of British Petroleum was renamed BP Canada in 1969; and in 1971, it acquired 97.8% stake of Supertest Petroleum.[37]