OREANDA-NEWS. The official purchase prices at cash calculations on the London Metal Exchange on April 17, 2007 made $2 800 for a ton of aluminium, $7 830 for a ton of copper, $2 000 for a ton of lead, $49 850 for a ton of nickel, $14 695 for a ton of tin, $3 510 for a ton of zinc.

Three-month purchase contracts were made at the price of $2 835 for a ton of aluminium, $7 775 for a ton of copper, $1 985 for a ton of lead, $47 400 for a ton of nickel, $14 595 for a ton of tin, $3 540 for a ton of zinc.