Trends 



3615 



■ I ' ■ ' « I 



' ' ' I • ' ' • I 



COOPERAGE CONSUMED IN U.S. 



J — I — I — I — I I I L 



1910 



1920 



1930 



1940 



1950 



I960 



1970 1976 



Figure 29-20.— Cooperage consumed in the United States, 1906-1976. (Drawing after 

 McKeever and Hatfield.M 



1920 



1930 



1940 



1950 



I960 



1970 



1960 



Figure 29-21. — Number of treated and untreated crossties annually consumed in the 

 United States, 1920-1978. (Drawing after McKeever and Hatfield.') See also figures 



22-53 and 22-54. 



