Introduction 



147 



Til the long mill, therefore, it may be found that an adjust- 

 ment based upon a complete and impartial statement of facts 

 relating to the tailings situation is l)eneficial both to the agri- 

 cnltnial nnd to the mining interests concerned. 















I V-.:ri'/',. ; A 



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UTHPIC 



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Fig. 1. — General map of the Clifton-Morenei and Gila River mining and 



irrigation district, Arizona 



Soluble Copper Compounds 



Following the disposition of mining detritus, there remained 



the problem of soluble copper compounds which, in small but 



continuously appreciable quantities, find their way with waste 



waters into the stream-flow of the region. These compounds 



