Answer: blastfurnace

AnswerCrossword Clue
BLASTFURNACEPig-iron producer
BLASTFURNACEStructure in an iron smeltery
BLASTFURNACEFire place?
BLASTFURNACESteelmaker's need
BLASTFURNACECoke product maker
BLASTFURNACESmeltery fixture