History of lime in mortar | GraymontLime/sand mortars hardened at a slow rate and would not harden under water. . In the late 1930's, the production of pressure hydrated dolomitic lime products.sand and line industry,Line - WikipediaLine is a sedimentary rock, composed mainly of skeletal fragments of marine organisms . or paints, as a chemical feedstock for the production of lime, as a soil conditioner, or as a popular decorative addition to rock gardens. . Impurities (such as clay, sand, organic remains, iron oxide, and other materials) will.
sand and line industry