Mine passageway (5)
I believe the answer is:
shaft
'mine passageway' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for shaft that I've seen before include "Handle - rod - passageway" , "Vertical passageway, into a mine say" , "Ray (of sunlight)" , "Ray; access hole to a mine" , "Spear handle; ray of sun" .)