THE PETRIFIED RIVER 



Color Sound U. S. Bureau of Mines 



28 minutes M.P.O. Sale 



Made in cooperation with the Union Carbon and Carbide Cor- 

 poration and produced with the technical assistance of the U.S. 

 Atomic Energy Commission, this film serves to explain the impor- 

 tance of uranium and its use in nuclear fission. 



First the film explains the geologic theory of the formation of 

 uranium deposits in the beds of prehistoric rivers of the Colorado 

 Plateau. Then it graphically illustrates the prospecting, exploration, 

 mining and milling of uranium ores today. It goes on to introduce 

 us to the modern grinding mills and acid tanks treating tons of 

 rock to recover pounds of precious uranium concentrates. 



Unusually clear animation demonstrates how uranium's energy 

 will be released and controlled to generate power for great cities 

 in the future. Other sequences show the atomic reactor at Oak Ridge, 

 Tennessee, and the preparation of radioactive isotopes with a dem- 

 onstration of their uses in scientific research, in the fight against 

 disease and in the search of mankind for the secrets of a better life. 



Better than average photography and production make this film 

 of general interest. It should be noted that geologists and social 

 scientists will find it of particular interest. 



AUDIENCE: Junior high; senior high; college; adult 



ROAD OF IRON 



Black & White Sound National Film Board of Canada 



42 minutes Rental Sale 



Geologists seek iron ore under war pressures, and an iron ore field 

 is opened at Ungava in Northern Quebec. 



The tremendous problems of transporting the ore, and their solu- 

 tion by modern technology and human perseverance are docu- 

 mented in the National Film Board of Canada production. Planning 

 and financing groups, labor, roads, railroads, towns, power supplies, 

 air fields, dams, machinery and food all play essential parts. The 

 film imparts a great sense of adventure in discovering new sources 

 in the wilderness and in conquering that wilderness in the name of 

 civilization. 



AUDIENCE: Junior high; senior high; college; adult 



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