ironworks - steel, mine - ?

COAL
List of words for the clue ironworks - steel, mine - ? from the crossword:
ORE ESSEN AMOI WORKSTEAD WORKPLACE WORK WOOD STONE SAWMILL QUARRY MEAT BEER OURS ORES IRON ADIT DEERE SLAG ALLOY
WordClue
BEERironworks - steel, brewery - ?
MEATironworks - steel, slaughterhouse - ?
MINEsalt or coal
SLAGWaste material from a coal mine
WOODironworks - steel, sawmill - ?
ALLOYbronze or steel
EMBERglowing piece of coal or wood
PLANTsteel or flowering
SLACKSmall coal
STEELmine - coal, ironworks - ?
STONEironworks - steel, quarry - ?
SWORDsteel, blade
CARBONcoal
QUARRYsteel - ironworks, stone - ?
BONANZArich mine or vein of silver or gold
BREWERYcoal - mine, beer - ?
SAWMILLsteel - ironworks, wood - ?
KEROSENEcoal oil
IRONWORKScoal - mine, steel - ?
SLAUGHTERHOUSEcoal - mine, meat - ?
BEERironworks - steel, brewery - ?
STONEironworks - steel, quarry - ?