A Reef dipping at 54:00:00 is being mined underhand so that the dip along the face is 32:00:00 . On 1 5 Level the lower end of the face is 10 metres west of a raise which was developed on the dip of the reef. The ( inclined ) length of this raise from 15 to 14 Level was 90 m . Calculate The distance along 1 4 level from the top of the raise to the upper end of the stope face.
