The change in base metal stocks on the London Metal Exchange on August 1 was as follows: Copper inventories increased by 625 tons, with a total stock of 31,525 tons. Aluminum stocks are reduced by 500 tons and the total stock is 532,775 tons. Tin inventory decreased by 60 tons, with a total stock of 3,730 tons. Lead inventory decreased by 2 25 tons and total stock was 64,425 tons. Zinc stocks decreased by 950 tons and the total stock was 581,525 tons. Nickel inventory increased by 120 tons, with a total stock of 7,110 tons. Aluminum alloy stocks remained flat with a total stock of 46,300 tons.