What is M10 Sand?

M10 Sand is sand made from the process of crushing rock, usually granite.  M10 sand is typically varies from light to dark gray in color.  It can contain a mixture of coarse to fine grains of sand.  It can be called manufactured sand, M sand, Man Sand, #10 sand, rock dust, granite dust, decomposed granite, or screenings.  However, m10s typically is used for the screened, washed version of concrete sand produced by a quarry.  It is best used as a concrete sand for a compactible base beneath pavers, pathways, and arenas.