38 
Since the Authority’s own RC8 aerial camera became available a well planned 
combination of phototheodolite and aerial survey for one and the same project 
has offered great advantages. 
The aerial camera has closed a vital link in the chain of photogrammetric 
mapping stages for the Snowy Mountains Scheme. The use of a high performance 
normal angle lens has substantially eased the plotting of rugged terrain. For the 
floating mark it has opened up the way to descend into deep river gorges and to 
fall in between trees to scan faithfully the ground underneath. 
Acknowledgements 
The author is indebted to the Snowy Mountains Hydro Electric Authority for 
permission to publish the information contained in this paper. He also wishes 
to thank his associates of the SMA Survey Branch who gave valuable assistance 
and contributed to the work described. 
Any views expressed in this paper are the author’s and do not necessarily 
represent those of the Authority. 
Bibliography 
Strasser, G. J. Ground-Photogrammetry in Australia. 
The Australian Surveyor, Vol. 14, Nos. 3-4, Sept.-Dec., 1952, pages 
101-109. 
Zarzycki, J. The graphical interpolation adjustment of a double strip. 
Photogrammetric Engineering, Dec., 1949. 
Zeller, M. Textbook of Photogrammetry. 
Translated by Miskin - Powell, London, 1952.