El Minya region in Egypt is home to one of the world's largest and highest quality limestone deposits, with brightness levels above 97% and CaCO3 content of 99.6%. Limestone is one of the important resources for human beings. It is an extremely versatile mineral that is used in various fields and in numerous ways. some applications : -paints -building material -plastics and rubber -source of calcium in chemical industries - lime production that use in different fields. -cement -glass -ceramics -agriculture -polutry and animal feeds -paper -Petroleum reservoirs -cosmetics