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About Martin Marietta Materials Inc. Martin Marietta Materials, Inc. is a natural resource-based building materials company, which engages in the provision of aggregates including crushed stone, sand, ...
About Martin Marietta Materials Inc. Martin Marietta Materials, Inc. is a natural resource-based building materials company, which engages in the provision of aggregates including crushed stone, sand, ...
Not-in-my-backyard tendencies make the permitting process very difficult for new quarries, forming high barriers to entry and protecting Martin Marietta’s aggregates business from incoming entrants.
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