In Cork the old lad uses cosyflame nuggets in their stove. he gets them in 20Kg bags around the togher area. any coal will do but double (small lumps) will work best.
Coal size grades from slack to nuts/peas to singles (small lumps) to doubles (bigger lumps) to trebbles and on up to cobbles (small boulders!)
Cork is a smokeless area (meath is not) so be sure what ever you use in Cork complies with the smokeless fuel leglislation.