Economy of Devon (chewing gum) and HMNB Devonport (the largest naval base in western Europe) are in Plymouth. Torquay was home to Beverage Brands, the producers of WKD Original Vodka. Britannia Royal Naval College is at Dartmouth. Mining for tin and copper was carried on in Devon from ancient times until the 1930s: see Dartmoor tin-mining. Agriculture has been an important industry in South West England since the 19th century: approximately 80% of land in the South West of England is in agricultural use (19.6% of England's total). In the later 19th and early 20th centuries there were a number of potteries in
Royal Naval College, Greenwich transferred to University College London in 1967. The Royal Naval College continued to train women until 1976, when their courses were transferred to the Britannia Royal Naval College. From 1983 the relocated Joint Services Defence College also occupied much of the King Charles building. With a shrinking Royal Navy, the decision was taken to close RNC Greenwich in 1998. All initial officer training is now carried out at the Britannia Royal Naval College, and the new Joint Services Command and Staff College, created in 1997, took over the staff college functions. The college was established in buildings designed by Sir