Warren Buffett, the third wealthiest man on the planet (net worth: $44 billion), often referred to as the “Oracle of Omaha,” is the target of a May 5 action called for by Stop Coal B.C. Well, not Buffett directly, but a rail company he owns through his massive holding company, Berkshire Hathaway: Burlington Northern Santa Fe (BNSF) Railway.

BNSF Railway is the second largest freight rail company in the United States and the exclusive carrier of thermal coal from coal basins in the northwestern U.S. to docks in British Columbia, where the dirty coal is exported to the global market, primarily to Asia.