Bui. 908, U. S. Dept. of Agriculture. 



Plate VIII. 



Fig. I. — Device for Cleaning Cans. 



Sawdust is passed down the rotating tube with the cans. 





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Fig. 2. — Cans of Sardines After They Have Been 

 Processed. 



It may take from S to 10 hours for the interior of such a pile, which is 

 100 feet long, 8 feet wide, and from 4 to 5 feet deep, to lose its heat. 



