Earlier this year, it emerged that the London Metals Exchange had been holding a bunch of bags filled with stones instead of the nickel needed to back trades for major commodities players, including Trafigura. Before that, commodities trader Mercuria was given painted rocks instead of the copper it was supposed to take delivery of. In short, the commodities world is no stranger to fraud. But what is it about the business of trading, moving and storing commodities that makes it so susceptible to scandal? In this episode, we speak to repeat Odd Lots guests and commodities collateral specialists Mercury Group CEO Anton Posner and President Margo Brock, about some recent episodes of counterfeiting in commodities world, why they seem to keep happening, and what could be done to prevent further instances from occurring.