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Brick intended for use in drainage structures for the conveyance of sewage, industrial wastes, and storm water, and related structures such as manholes and catch basins. The bricks are classified as sewer bricks (Grade SM)
Brick intended for use in drainage structures for the conveyance of sewage, industrial wastes, and storm water, and related structures such as manholes and catch basins. The bricks are classified as sewer bricks (Grade SM)