a whole has been only 21 per cent. According to the thirteenth census,
Arizona contained eight cities with an aggregate population of 58,414.
The largest cities were Tucson, with a population of 13,193, and Phoenix
with 11,134.
Arizona produces more copper than any other State in the Union. Of the
total copper ore mined in the United States (1909) 27.7 per cent was
from Arizona. There are also good mines of gold and silver. Coal-mining,
marble-quarrying, lumbering, raising cattle, sheep, and ostriches are
also important industries in Arizona. Through the efforts of the
Reclamation service in completing the Roosevelt Dam and a dam at Parker,