public Arctica.fuelGroups getFuelGroup(int blockID)
   {
      Arctica.fuelGroups group = Arctica.fuelGroups.NONE;

      if(fuelBlocksGroupIDlist_Wool.contains(blockID))
      {
         group = Arctica.fuelGroups.WOOL;
      }
      else if(fuelBlocksGroupIDlist_CraftedWood.contains(blockID))
      {
         group = Arctica.fuelGroups.CRAFTED_WOOD;
      }
      else if(fuelBlocksGroupIDlist_Log.contains(blockID))
      {
         group = Arctica.fuelGroups.LOG;
      }
      else if(fuelBlocksGroupIDlist_CoalOre.contains(blockID))
      {
         group = Arctica.fuelGroups.COAL_ORE;
      }
      else
      {
         // block with this ID is not a valid flammable block, so it has no Group
      }      

      return (group);
   }