By Capt. Paul & Dr. Nat in Texas (Eclogite) on Wednesday, November 23, 2005 - 08:16 am:
A raise is a vertical or inclined opening in a mine driven upward from a level to connect with the level above, or to explore the ground for a limited distance above one level. After two levels are connected, the connection may be a winze or a raise, depending upon which level is taken as the point of reference.
A raise can be driven by hand or by a machine called a raise borer which produces a circular excavation either between two existing levels in an underground mine or between the surface and an
existing level in a mine. In raise boring, a pilothole is drilled down to the lower level, the drillbit is removed and replaced by a reamer head
having a diameter with the same dimension as the desired excavation and this head then is rotated and pulled back up towards the machine. This creates a hole much like the one seen in the second photo, although I'm almost sure Quincy never used this machine and that the raise in that photo would have been driven by hand.