The Mineral Industry of Washington Mineral Resources Program
State's nonfuel mineral value: construction sand and gravel, portland cement, and crushed . preliminary estimates as of February 1999 and are expected to change. For .. nearly 118,000 tons of silica from its Superior quarry in King. County.
Jun 13, 2011 . A quarry is a type of mine called an open pit mine, because it is open to the Earth's surface. . The earliest quarries were mined with hammers, picks, and chisels made of stone or metals . Quarries change their environment.