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 outline
 :
(a) Uses of copper. (Remember
 that brass is chiefly
copper.)
Countries that produce the
two million tons now used
annually.
States in the United States
prominent in copper production
 (Fig. 90).

~nortant Mining Reais

Fig. 89. In 1921 Alaska produced more copper
than any of the states except Arizona and Michigan.
 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,
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UNITED STATES
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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.