Estonia has lots of oil shale (not same thing as shale oil). They never needed to import coal, because they have their own fossil fuel.
Estonia has lots of oil shale (not same thing as shale oil). They never needed to import coal, because they have their own fossil fuel.
This is true. A nuance often missed. Different rock (that is considerably worse in several ways, needs heavy fuel oil to be added to actually burn and has I think even higher co2 output per unit of energy) but kinda the same.