إنتاج الرمل من الصخور المسحوقة
إنتاج الصخور الصلبة سحق Crushed stone Wikipedia Crushed stone or angular rock is a form of construction aggregate, typically produced by mining Despite the low value of its basic products, the crushed stone industry is a major contributor to and an indior of the include sand and gravel, iron and steel slag, sintered or expanded clay or shale, and perlite or vermiculite.