Look and interpret the "ware and tare items" in the photos Billy posted, just 2 off many available!
It functioned all right but not in the way you guys think.
Examine all the [ware and tare marks and lack of visible (wooden and stone/?) structures] from the quarries up to and including the relieving chambers, then and just then you will have some visual evidence to comment on.
Surmising something you think may or may not have been the case is not an "OPTION".