TABLES--continued
15. Rates of Growth in Domestic Copper Ore (Mine
Recoverable Content) Production by Decade,
1860-1960 178
16. Rates of Growth in Pig Iron Shipments by Decade,
1860-1960 179
17. Rates of Growth in Steel Ingots and Castings
Produced, I87I-I96O 180
18. Average Annual Rates of Growth Between Decade
Averages for Copper, Pig Iron, and Steel Ingots
and Castings, I86I-I96O 181
19. Average Annual Rates of Growth of Copper, Iron,
and Steel Production and Gross National Product,
1900-1960 . . 182
20. Apparent Consumption of Iron and Copper Relative
to Domestic Production: Selected Years 1900-
1960 183
21. Potentially Recoverable Iron Scrap, 1929 and i960 188
22. Potential Recovery of Obsolete Copper Scrap,
I960 189
23. Copper--Apparent Consumption--Additions to Metals
in Use and Average Annual Addition by Decade,
I9OO-I96O I93
24. Iron--Apparent Consumption-Additions to Metals
in Use and Average Annual Addition by Decade,
1900-1960 I95
25.Total Iron and Ferroalloy Metais--Apparent
Consumption-Additions to Metals in Use and
Average Annual Addition by Decade, I9OO-I96O. . I98
26. Copper and Iron in UseAdjusted for 1860-1900
Production 201
27. Average Annual Rate of Growth in Iron and Copper
in Use Relative to Gross National Product,
1920-1960 and 1900-1960 202
vii