Coloradans were lucky in that most of their mines were dry, because water caused erosion, was costly to drain, and often dissolved the supply of precious metals in the rocks.
(Coloradans; were; lucky in that most of their mines) (Coloradans; were; dry; because water caused erosion, was costly to drain, and often dissolved the supply of precious metals in the rocks) (water; caused; erosion) (water; was; costly to drain)
Coloradans Coloradans water water
were were caused was
lucky in that most of their mines
dry because water caused erosion, was costly to drain, and often dissolved the supply of precious metals in the rocks
erosion
costly to drain