The Mining Industry

121

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IF LEA:

METRIC TON

Fic. 94. Comparison of this map with Figure 95 shows that lead and zinc are usually found
together. The United States and Spain produce the greater part of the world’s supply of lead.

8. Let different members of the class or different committees report on the
mining of (a) zinc; (b) lead; (¢) tin; (d) gold: ‘#) silver. Use the
following outline :
(a) Uses, especially in your own town and at home.
(b) Where found in the United States.
(c) The deposits nearest to your home..
(d) How prepared for the market.
(e) Increasing or decreasing in use and why.

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Fic. 95. Zine, like lead, occurs chiefly in the United States and western Europe (especially
Belgium and Germany). The circles on this map indicate regions where zinc is mined in small
quantities; ore is smelted in Japan, but the other minor production areas export their ore for
smelting.