88 (Continued) 
been conducted. The magnetic-prospecting methods were further adapted 
for aerial surveys of regions such as the Kara Sea Basin and the Northern 
and Polar Urals. The Institute has also developed a theory and apparatus 
for high-frequency investigations of the upper layer of the earth's 
crust. Other equipment developed includes a device for recording the 
readings of measuring instruments in rectangular coordinates and a 
feedback prospecting seismometer. 
Some theoretical investigations have been undertaken by the 
Institute in perfecting the various prospecting methods, i.e., mathematical 
analysis of sound. They have also reported research on theories for the 
interpretation of geophysical investigations. Other current research 
involves a cooperative project for the development of the basic designs and 
models of electronic equipment for use in electrical prospecting. 
VIRG periodically publishes a Trudy. 
89 
Name: All-Union Scientific-Research Institute of Railroad Construction and 
Planning 
(Vsesoyuznyy nauchno-issledovatel’skiy institut zheleznodorozhnogo 
stroitel'’stva i proyektirovaniya) 
Address: -- 
Director: -- 
Deputy Director: -- 
Administrative Affiliation: -- 
Selected Staff Members: -- 
Description: 
The Institute's staff has published research on the vibrational 
strength of lap-welded joints, density of hydraulic mixtures pumped through 
pipes of 200 to 300 m in diameter, modeling of a-c electromagnetic fields 
for geophysical prospecting, testing methods for concrete, and electric 
sounding in shallow water. A Trudy of the Institute has been published. 
90 
Name: All-Union Scientific-Research Institute of Railroad Transportation 
(Vsesoyuznyy nauchno-issledovatel'skiy institut zheleznodorozhnogo 
transporta--VNIIZhT) 
Address: Moscow, 3-ya Mytishchinskaya ulitsa, 10 
