Camborne-Redruth (kămˈbôrn, –bûrn, rĕdˈrōth) [key], town (1991 pop. 34,262), Cornwall, SW England. Tin and copper mines in the area have been greatly depleted, but rock drills and mining machinery are made in the district, and the School of Metalliferrous Mining is in Camborne. John Wesley preached to outdoor gatherings near the present mines, and the area is also famous for the inventor Richard Trevithick, who devised (1800) the high-pressure steam engine. At the summit of Carn Brea hill are prehistoric remains.