бутлуурын нэг роторын нөлөө. Өмнөд Африкийн Rock Crusher түрээслүүлнэ. Crazy Crusher - Metallurgist & Mineral Processing . Forty pounds of the hardest rock can be easily crushed, in one hour, to such a fineness that 20 per cent, of it will pass a sieve having 60 meshes to the linear inch (No. sieve).