DAILY METAL PRICES (June 30, 2008)

CONVERSIONS OF WEIGHTS & MEASURES

1 troy ounce = 31.1 grams

1 kilogram = 32.15 troy ounces

1 kilogram = 2.2046 pounds

1 (metric) tonne = 1,000 kilograms

1 (metric) tonne = 2,204.6 pounds

1 (short) ton = 2,000 pounds

1 (metric) tonne = 1.1023 (short) tons

1 gram per (metric) tonne = 0.02917 troy ounces per (short) ton = 0.03215 troy ounces per (metric) tonne

1 kilometre = 0.6214 miles 1 hectare = 2.47 acres

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Date	June 23	June 20	June 19	June 18	June 17
BASE METALS (London Metal Exchange — Midday official cash/3-month prices, US$ per tonne)
Al Alloy	2680/2710	2701/2735	2640/2680	2661/2690	2601/2650
Aluminum	3076/3129	3090.50/3137	3035/3085	3026/3074	2934/2982
Copper	8540.50/8385	8590/8421	8385.50/8228	8296/8126	8181/8042.50
Lead	1821/1855	1870/1875	1806.50/1840	1886/1906	1802/1825
Nickel	22150/22325	22505/22650	22605/22650	23610/23800	23500/23750
Tin	23225/23175	22850/22850	22350/22350	22505/22505	21950/21900
Zinc	1898.50/1923	1925.50/1955	1885.50/1916	1891.50/1920.50	1841.50/1867.50
PRECIOUS METAL PRICES (London fix, US$ per troy oz.)
Gold AM	902.25	900.00	893.25	884.00	883.00
Gold PM	881.00	907.50	903.00	887.50	881.50
Silver	17.19	17.44	17.22	17.00	17.22
Platinum	2045.00	2068.00	2067.00	2103.00	2047.00
Palladium	471.00	475.00	472.00	467.00	456.50

LEGEND

A – Australian Stock Exchange

C – CNQ trading and quotation system

J – Johannesburg Stock Exchange

L – London Stock Exchange

M – Mexico Stock Exchange

N – New York Stock Exchange

O – U. S. over-the-counter

Q – NASDAQ or U. S. OTC

T -Toronto Stock Exchange

V – TSX Venture Exchange

X -American Stock Exchange

* – Denotes price in U. S.$