OREANDA-NEWS. The official purchase prices at cash calculations on the London Metal Exchange on April 19, 2007 made $2 800 for a ton of aluminium, $7 941 for a ton of copper, $1 974 for a ton of lead, $50 100 for a ton of nickel, $13 820 for a ton of tin, $3 595 for a ton of zinc.

Three-month purchase contracts were made at the price of $2 846,5 for a ton of aluminium, $7 910 for a ton of copper, $1 989 for a ton of lead, $48 190 for a ton of nickel, $13 800 for a ton of tin, $3 622 for a ton of zinc.