Two or three lodes, trending about N.W. by N., crop out in the cliffs of Porthledden, on the north side of Cape Cornwall headland (6-in. Corn. 73 N.W.). They were exploited by adits driven into the cliffs . Between 1902 and 1916 the mine was being worked in a small way above adit and the dumps treated. An adit commencing just above the beach at the south end of Lower Boswedden Cliff was driven about 150 fms . on a lode and crosscuts from about 60 fms. from the portal were driven, one to the north-east and the other south . The latter passed through an Adit Level on Trelewack Lode at 35 fms . and at about 100 fms. connected with Bozands Shaft of St. Just Amalgamated Mine. The mine is said to have produced 10 tons of black tin between 1914 and 1918, most of which was from dumps.
