Bloomberg reported Citigroup will cut back on financing for coal mining projects, in the latest blow to an industry that’s viewed as a key contributor to global warming.

Bloomberg said Citigroup’s credit exposure to coal mining had “declined materially” since 2011 and that the trend would continue into the future.

Bloomberg noted that Bank of America and Credit Agricole both previously said they were turning away from financing coal this year, as activists and policy makers zero in on the fuel as the biggest source of the emissions blamed for heating up the planet to dangerous levels.