From the National Mining Association:
The mining industry is vital to the American economy. In 2003, the value of minerals was $57 billion. The value of metals produced in the United States was $8.3 billion. Industrial mineral production value was $29.6 billion in 2003, the same as in 2002.
The top nine mineral commodities produced in 2003 were crushed stone, portland cement, construction sand and gravel, gold, copper, iron ore, lime, and salt. In 2003, the U.S. produced 1,071,752,000 short tons of coal valued at $19.1 billion. The mining industry employed 320,149 workers, with an average annual income of $50,734.
Sand and gravel 43,910