1. Granular material passing the 3/8" sieve, almost entirely passing the No. 4 (4.75-millimeter) sieve, and predominantly retained on the No. 200 (75-micrometer) sieve, and resulting from natural disintegration and abrasion of rock or processing of completely friable sandstone. 2. That portion of an aggregate passing the No. 4 (4.75-millimeter) sieve, and resulting from natural disintegration and abrasion of rock or processing of completely friable sandstone. Note: The definitions are alternatives to be applied under differing circumstances. Definition (1) is applied to an entire aggregate either in a natural condition or after processing. Definition (2) is applied to a portion of an aggregate. Most natural sands are at least 98% silica. Fine aggregate produced by crushing rock, gravel, or slag commonly is known as manufactured sand. Finer than gravel, sand is used as an ingredient in mortar and other traditional building materials. It is also listed as inorganic additive used for stucco marble preparation according to literature. Wittenburg (1999); RS Means Building Glossary (undated); English Heritage (2000); Museum of Fine Arts, Boston (2000). [J. Cassar, R. de Angelis]