Cost index 
400 
Million barrels 
M8) 
1.0 
0.5 
200 
1950 
0 
U. S. cement production 
Ios) 
N g ZN 
. Ne OS aN 
“KR EN 10 S =N 
INE “IN S IN 
iS aN Ss S oN 
“INE IN SS oS 
s : SS RS 
“=N aN hey N SN 
ss S oa SS SS 
SN EN 5 S =N 
“IN SN S IN 
aN ms N S oN 
aN DIN S SN 
SS aS S SS 
BS :N Ons S gaN 
1960 1968 1950 1960 1966 
Wholesale prices Production output 
per manhour 
Gees Cement: 
Lee) «Concrete products 
Steel 
Ge )=Building construction 
Figure 1.2. Production data (Scource: 
Statistical Abstracts of the 
United States, 90th Edition, 1969) 
