Transverse section of the Comet Mine on the Hustler's Line of Reef Bulletin No 33, Plate No XXV signed by H. A. Whitdon, Underground Survey Office Bendigo September,1913. Map shows depth of the different levels, the type of stone and shaft about 2020 deep. A number of smaller drawings on the side. Reference explaining the different types of stone, etc. Geological Survey of Victoriamining, hustler's line of reefs, transverse section of comet mine bulletin no 33 plate no xxv, lightning hill line of reef