It doesn’t get much better for investors in Australian resources as surging global demand drives prices to multi-year highs with the promise of more to come as confidence rises in vaccines taming the spread of Covid-19.Dr Copper, the metal used in almost everything and a widely quoted prophet of future economic growth, is leading the way, rising to a nine-year high of $US3.77 a pound. Platinum, the forgotten precious metal, is trading at a six year high of $US1215 an ounce.Most other commodities, bar gold, are also trading at multi-year highs, especially battery metals.Across the spectrum of commodities, there are records being broken as the once-in-a-lifetime bull market predicted last month by Denmark’s Saxo Bank picks up speed. QUOTE All battery metals are now in play , cobalt demand to boom IMO.