120. Main Drive Shaft.
This is the eastern section under the white beaterfloor, another shaft ran from the powerhouse under the kraft beaterfloor as the mill was extended, and can be seen in some of the mill plans. By the late 1970s the white beaterfloor basement had been extensively rebuilt aand no sign of the main shaft remained. Some support piers of the western section remained under the kraft beaterfloor near chests Y1 – Y4 (the vertical cylindrical chests then serving no 3 m/c and as a starch slurry tank). The underside of the upperfloor of the beaterfloors showed the arrangement of the steel beams to provide for the drive belts to pass through to the refiners and beaters.
