The big push on the climate change fight has been the shutting down of coal fired power plants. However, this is only part of the problem with coal.
A significant amount of coal mined (rouhly half) is used in the “coking” process in the making of iron. Coal mining releases methane, CH4, a really bad green house gas that is many more times more potent than CO2. Some studies are indicating that methane may have caused up to a third of the global warming over the last one hundred years.