532 
SYMPOSIUM PHOTO INTERPRETATION, DELFT 1962 
tensional joint-belts may have a major role is tentatively proposed for further 
detailed study. 
The efficiency of photo interpretation and fracture analysis as a tool for 
search and exploitation of geothermic energy could hardly be estimated on the 
basis of this single example, even though it refers to the best known steam-field 
in the world. However, it is the impression of the writers that continued in 
vestigation, and rapidly improving techniques, will lead to the development 
of a valuable tool for the exploitation of producing areas and for the explora 
tion of new ones. 
Acknowledgements 
We wish to acknowledge the Direction of the “Larderello” Company, 
which has contributed the basic information on the steamfield, the airphotos, 
and some of the illustrations. In particular, we wish to acknowledge Mr. R. 
Burgassi, Mr. F. Battini, Dr. G. Stefani, Dr. R. Cataldi for their interest 
in this research and for their discussion of some essential points. 
Bibliographic Reference 
1. Blanchet, P. H. (1957). Development of fracture analysis as exploration method. Bull. 
A.A.P.G. vol. 41, No. 8, 00. 1748-1759. 
2. Burgassi, R. (1957). Situazione geomineraria delle “Regione dei Soffioni Boraciferi”. 
Rassegna di studi, Larderello IV, sett. 1957. 
3. Burgassi, R. (1961). Prospection géothermique pour la recherche des forces endogènes. 
O.N.U. Conférence sur les sources nouvelles d’énergie. Roma, 1961. 
4. Facca, G. & Tonani, F. (1961). Natural steam geology and geochemistry. O.N.U. Con 
férence sur les sources nouvelles d’énergie. Roma 1961. 
5. Marchesini, E. (1961). Photogeology applied to natural steam exploration. O.N.U. Con 
férence sur les sources nouvelles d’énergie. Roma 1961.