Typed letter to Albert from Dennis O'Hoy, dated 1st May, 1971. The letter outlines the activities of Jack Cohn, Clark Jeffery, Harry Biggs, Jim Sullivan and Dennis O'Hoy for the day. They went to Quarry Hill and looked at two tunnels, went ot the North Deborah, the Hill and the Log Gaol. Notes prepared by Albert Richardson.document, memo, victoria hill, victoria hill, victoria hill - letter to albert from dennis o'hoy, jack cohn, clark jeffery, harry biggs, jim sullivan, dennis o'hoy, addits at quarry hill, north deborah, central deborah, victoria quartz, log gaol