In this interview with SmallCapPower at Mines and Money London 2017, Nolan Watson, CEO of streaming company Sandstorm Gold Ltd. (TSX:SSL), discusses how he founded Sandstorm in his 20s and guided the Company to a billion-dollar valuation. In this interview he talks about why the streaming model is well-suited to the changing needs of the mining industry and outlines his investment criteria. Find out the one thing that he cautions investors to avoid by watching this video interview.