14 
(c) Two more sheets in the series Svalbard 1 : 100 000 have 
been compiled at the scale of 1 : 50 000. For this com 
pilation oblique air photographs from about 3 000— 
3 500 m have been used in a Zeiss Stereoplanigraph,C4. 
(d) Large scale maps of a coal mine area in Adventdalen, 
Svalbard, were compiled by means of terrestrial and 
aerial photogrammetry. 
3. Systematic glaciological research in Norway and Svalbard 
has been maintained, determining velocities and variations 
in glacier volumes by means of photogrammetry. 
Antarctic 
Four sheets in the series Dronning Maud Land 1 : 250 000 
have been published, and several other sheets in the same 
series have been compiled at the scale of 1 : 100 000 using 
oblique air photographs taken in the austral summer of 1958— 
59. The Spr-Rondane area in Dronning Maud Land has been 
recompiled in the scale of 1 : 100 000, based on Belgian field 
work and mainly Norwegian oblique air photographs taken 
during the mentioned season. The scale of publications will 
be 1 : 250 000. 
Instruments 
1 Zeiss Stereoplanigraph, C4. 
1 Zeiss Stereotop. 
1 Orel-Zeiss Stereoautograph. 
Zeiss cameras (old types). 
REPORT 
the Norwegian government road directorate 
Photogrammetric equipment 
1 Wild A 8 equipped with electric coordinate printer 
3 Balplex plotters 
The main photogrammetric work is surveying, profiling, 
map control, supplying, and various research work.