Boston Sand and Gravel is a supplier of ready-to-pour concrete, concrete blocks, sand, and crushed stone, with operations and subsidiaries around eastern Massachusetts and New Hampshire in the United States. The company was founded in 1914, and was originally located where the CambridgeSide Galleria is now. The spot was convenient to the Charles River because materials were originally sourced from dredging. Later, the company began obtaining raw material from quarries in Ossipee, New Hampshire, and Hooksett, New Hampshire.