Arbitrage & Substitution in the Metals Market

Did you know:
161,000 tonnes = amount of gold that has ever been mined
161,000 tonnes = amount of steel created every 60 minutes

83,000 tonnes = amount of gold that goes into jewellery, each year
29,000 tonnes (18% of total stocks) = currently held by the world’s central banks

oh, read about arbitrage and substitution impact on the metals market here (ft.com)

...and why farmland might be a good idea, if you don't mind lack of portability - and it things go pear-shape, you can always grow your own crops!