Crossword clues for Ventilating shafts.:DUCTVentilation shaftAIRWAYVentilation shaftUPTAKESVentilating shafts.AIRWELLVentilating shaftUPTAKEVentilating shaftUPCASTVentilating shaft in a mineAIRWELLSVentilation shafts