Is there more then one bonus output possibe or is it only tungsten from banded iron and not limonite?
Btw. a full list of all GT ores and processing is here if you want to add more: http://ftb.gamepedia.com/GregTech/Mining_and_Processing#Default_Ore_Mixes
Btw. a full list of all GT ores and processing is here if you want to add more: http://ftb.gamepedia.com/GregTech/Mining_and_Processing#Default_Ore_Mixes