• Two ex-Goldman bankers have made their fortune betting on a non-renewable resource, Bloomberg reported.
  • Peter Bradley and Spencer Sloan have built a $1 billion commodities firm over the last eight years.
  • Javelin Global Commodities is now the No. 1 US coal exporter despite the environmental concerns associated with the fuel.

Two former Goldman Sachs traders have built the largest coal-exporting business in America, despite a global push to move away from the controversial fossil fuel. 

Peter Bradley and Spencer Sloan, both left the investment bank right before it offloaded the last of its coal assets - and over the last eight years, they have built a company that's now valued at more than $1 billion. 

Javelin Global Commodities has grown to become the No. 1 exporter of American coal, Bloomberg reported, citing sources familiar to the company.