
	Martin Marietta Materials&nbsp;is an American&nbsp;aggregate,&nbsp;chemical, and&nbsp;composite material&nbsp;company based in&nbsp;Raleigh, North Carolina. It is the second largest producer of crushed stone, sand, and gravel in the&nbsp;United States&nbsp;behind&nbsp;Vulcan Materials Company. It also produces&nbsp;magnesia-based&nbsp;chemical products&nbsp;used as additives in applications including ceramics, paper, sugar, animal feed, and water treatment. It produces&nbsp;dolomitic lime&nbsp;used as a&nbsp;fluxing agent&nbsp;by the&nbsp;steel industry. It is a supplier of&nbsp;fiber-reinforced polymer products&nbsp;for use in infrastructure&nbsp;such as panels and&nbsp;bridge&nbsp;decks and&nbsp;transportation&nbsp;components such as&nbsp;truck trailers&nbsp;and&nbsp;railroad cars.
