Martin Marietta Materials Inc. is one of the largest producers of aggregates for the construction industry, including infrastructure, agricultural, nonresidential and residential in the United States. Based in Fountain, N.C., it supplies the crushed stone, sand and gravel used to build the roads, sidewalks and foundations. Additionally, the firm provides asphalt and concrete in select geographic areas. Martin Marietta Materials Inc. has more than 285 quarries and distribution facilities in 28 states, the Bahamas and Nova Scotia.
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