CHARACTERIZATION OF SILICA SAND DEPOSIT FROM …
Langer, 2003). The US produces 30% of the world's total silica sand from more than 150 operations, with about three-fourths of production coming from the central US alone in 1992 (Chang, 2002; Dolley, 2004a). In Africa, especially in Nigeria, however, the use of silica sand is limited on a domestic
