Front:
DANGER
@Blunny
PERSON IL
ONL
鹽蘇嘉樂
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FROM THE MINE TO YOUR HOME
Mining is only the first step in producing the
many mineral products we use each day. After
copper ore is mined, crushed, and smelted, molten
copper is poured into forms.
Because copper is such a good conductor of
electricity, it is widely used in the electricity industry.
Almost everything in your home that runs on
electricity contains some copper.
U.S.BUREAU OF MINES The Minerals Source
U.S. DEPART
BUREAU
OF
THE INTERIOR EN
INDUSTRIES
OF
AFFIX
HERE
