Topic 990
Mexico,
States,
United,
Mexican,
California,
Oregon,
Arizona,
Montana,
Colorado,
Atlantic,
mines,
January,
Mexicans,
Great,
mining,
Portland,
Paraguay,
Cuba,
December,
San,
April,
city,
York,
Eastern,
Louisiana,
Cuban,
Seattle,
Kentucky,
July,
Mines,
Canyon,
Montezuma,
railroad,
largest,
million,
Union,
Under,
Island,
Gila,
Cortez,
regions,
Its,
brief,
Aztec,
enterprise,
Sonora,
Snake,
north,
Chihuahua
Volumes with greatest proportion