OREANDA-NEWS. The official purchase prices at cash calculations on the London Metal Exchange on April 27, 2007 made $2 790 for a ton of aluminium, $7 740 for a ton of copper, $1 999 for a ton of lead, $50 090 for a ton of nickel, $13 400 for a ton of tin, $3 688 for a ton of zinc.

Three-month purchase contracts were made at the price of $2 816 for a ton of aluminium, $7 699 for a ton of copper, $1 991 for a ton of lead, $47 800 for a ton of nickel, $13 195 for a ton of tin, $3 680 for a ton of zinc.