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Somincor per cent copper. So there are still large copper lenses out there. Our aim is to define how much copper we have in those deep areas and to begin mining it, five or six years from now. But it's early days yet, and we may need a new shaft because it's so deep and so far to the north of the existing ore haulage systems." Zinc exploration, meanwhile, has been put on hold- not because of the low zinc prices but simply because so much has already been found and is yet to be developed. Expansion of capacity at the Neves- Corvo site has been a relatively inexpensive and easy exercise, partly because of the existence of the old tin plant and equipment; and partly because the site enjoys easy access to all the utilities. Water and appropriate recycling technologies give plentiful supply and are adequately sized, and power comes via a 150 kilovolt power line directly from the country's main transmission artery. The mine is also located close to the main A2 highway that links Lisbon to the Algarve, and this means it's within easy reach of the airports of Faro, 80 kilometres to the south and Lisbon, 150 kilometres north- west. The main bulk transport is by rail. The mine has its own rail spur and transports copper and zinc concentrates directly to its ship loading facilities at the Atlantic port at February 10 www. bus- ex. com 37