Effective production of thematic maps upon the 
results of the combined interpretation of RADAR, INFRA-RED, ERTS 
and other images will be reported. 
Reference will be made to the complement of the 
RADAM PROJECT for the rest of the Brazilian Territory, covering an 
area for which various kinds of data and images are available for 
comparison and correlation. 
A chapter is dedicated to the interpretation of 
data collected with other sensors namely the airborne gama-espec- 
trometer and magnetometer, combined with photo-geological interpre 
tation as applied to the inventory of iron and radioactive minerals e - 
deposits. 
INTRODUCTORY REMARKS 
  
One that look at a world map can see that within - 
the tropics of Cancer and Capricorne, the following large countries 
or continents are encountered: 
Australia, India, the whole African Continent, = e - 
part of Mexico, Central America and part of South America including 
the majority of the Brazilian territory. Among the countries seen 
into the tropical zone, part of them are underdeveloped and part 
are developing countries. 
Most of them are known to be potentially rich in - 
natural resources but still needing to prospect and inventoriate - 
said resources in order to evaluate them and certify themselves of 
the viability of their development. 
Members of this W.G.nr. 4 ask the participants of 
the Resources Inventories Pannel to apologize them for not being - 
© -