Sand and Gravel Products - High Grade MaterialsSand and Gravel Products. Sand & Fine Aggregate. 2NS Sand; #4 Concrete Sand; #8 Mortar Sand; Fill Sand; Freestall Sand; Screened topsoil, available upon.high grade aggregate,Construction aggregate - WikipediaConstruction aggregate, or simply "aggregate", is a broad category of coarse particulate . 10 mm graded crushed basalt rock or aggregate, for use in concrete, called "blue metal" in Australia. . Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage.
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