The Mining Industry 
119 
COPE 
Fig. 91. Most of the copper mined in the world is found in the Americas, chiefly in the moun- 
tain chain that stretches along the western coast of both continents. Some copper is found also 
in eastern Canada, the eastern United States, and Cuba. Outside of the Americas, Belgian Congo 
has now the greatest production, standing next to the United States and Chile, and ahead of 
Canada, Japan, and Mexico. South Africa, Australia, Spain, Peru, Germany, Yugoslavia, and 
Russia have productive copper mines (the Russian production for 1928 can only be estimated). 
Sweden and Norway, Italy, Austria, and Hungary together produce less than Bolivia. 
E. Metal mining in the United States. 
l. 
Compare the table of metal production on page 325 with a relief map of the 
United States. Name the mountain range with which you associate 
(a) the iron fields of Alabama; (b) the lead and zinc deposits of south- 
ern Missouri and adjacent states; (c¢) the gold of California; (d) the 
silver of Colorado; (e) the gold and silver deposits of South Dakota. 
The metal deposits of the Lake Superior district are associated with low 
ranges that have been worn down from high mountains. Why may these 
rances be called ¢ mountain roots”? 
) 
3 
Name the states in the interior of the country and on the Gulf of 
Mexico that have practically no metal deposits. Why should you ex- 
pect these regions to contain few metal deposits? 
Aside from the qualily of the ore, what other two great advantages have 
the iron mines of the Lake Superior region? 
What one metal is produced in every one of the western states? 
What four western states mine important quantities of each of six 
chief metals? 
i 
J 
b 
What state leads in the mining of two of these metals? What is our lead- 
ing gold state? silver state? copper state? iron state? Point out 
each of the leading metal states on the wall map and tell the class for 
what metal each is noted.