118 
Modern Business Geography 
C. The story of copper. 
1 Choose a committee to present 
the story of copper to the class. 
In an encyclopedia or some 
other book, find information on 
the topics of the following out- 
line : 
(a) Uses of copper. (Remem- 
ber that brass is chiefly 
copper.) 
Countries that produce the 
two million tons now used 
annually. 
States in the United States 
prominent in copper pro- 
duction (Fig. 90). 
~nortant Mining Reais 
Fig. 89. In 1921 Alaska produced more copper 
than any of the states except Arizona and Michi- 
gan. The crude ore is shipped down the coast 
to smelters on Puget Sound. 
(d) How copper is mined. 
(e) How copper is extracted (smelted) from the ore. 
(f) Why the United States smelts great quantities of imported copper 
nre. 
D. The story of aluminum. 
1. Let another committee study aluminum in the same way that copper 
was studied in Problem C. 
7, 
/ L Bal 
id 
wy 
{ 
UNITED STATES 
PRODUCTION 
ANPPRP 
rivITE ITY 
Important Mining Regions 
Fic. 90. The circles on this map are proportionate to the amounts of copper smelted in 1921 
in the districts indicated. Arizona, Michigan, Montana, and Utah were the leading states. 
Much of the copper is smelted near the mines. The United States supplies more than half the 
copper 11sed in the world.