Is there a website that has details about all type sand and rock? Its commercial value ? Which country imports a lot?

Is there a website that has details about all type sand and rock? Its commercial value ? Which country imports a lot?

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  1. 0 Votes

         The United States Geological Survey (USGS) website has a lot of information about the mineral industry, including sand and rock. Its Mineral Yearbook covers  other countries too, but not all of the country profiles are up-to-date.

         The National Stone, Sand, and Gravel Association has a lot of information as well.

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