1. B.G.S. 2007. Silica Sand : Geology and Mineral Planning Fact Sheets for Scotland, pp. 11-25.
2. BS2975:1988 Methods of sampling and analysis of glass-making sands.
3. B S EN 12904:2005 Products used for treatment of water intented for human consumption. Silica sand and silica gravel.
4. BS, 7533-3:2005 Pavements constructed with clay, natural stone or concrete pavers. .
5. Bolen, W.P. (1996). Sand and gravel, industrial. In 1995 Minerals yearbook (pp. 715-730). Reston, VA: U.S. Geological. Survey.