Article Use of Pneumatic Conveying Systems on the Opalfields from a paper by B.L. Calbert, South Australian Department of Mines and Energy.
Reprinted on Page 6 – Vol 18 No 5 1979 Quarry Mine and Pit magazine
Article Use of Pneumatic Conveying Systems on the Opalfields from a paper by B.L. Calbert, South Australian Department of Mines and Energy.
Reprinted on Page 6 – Vol 18 No 5 1979 Quarry Mine and Pit magazine