What investors need to know about gold, metals and miners: Evy Hambro of BlackRock World Mining Trust

Evy Hambro, co-manager of BlackRock World Mining Trust, joins Simon Lambert on the Investing Show to discuss why gold, precious and industrial metals have soared. He explains the outlook for prices now and why mining shares still offer an opportunity. He explains what investors need to look for in companies that means they could deliver profits for years to come - and what to avoid.