Black and white photo of a 10 Buoy Unit installed at O'Halloran's Cyanide Plant at Eaglehawk. Photo shows two views, one from the side and one from the top of the unit. Information typed on the back of the photo.sciences, instruments - general, scalebuoy, bill ashman collection - correspondence, scalebuoy, o'halloran's cyanide plant eaglehawk, vincent kelly

Old Tom mine included quartz mining and open cut mining. Today the remains of the battery site, cyanide plant, hydrolic sluicing and a 1930's puddler can be seen. It was operating in August 1874 and was taken over in 1897 by an English syndicate, J. R. Syndicate. By 1899 the mine had reached 500 feet in depth . The mine closed c. 1901.8529 Sand mining at Old Tom mine the Whipstick, Eaglehawk. O'Halloran's team of nine men and two horses and carts. Two men with horse and carts; and seven men on top of the sand deposit. A4 copy of 1513 Box 25sand mining, whipstick, old tom mine