Rock Crushing Rule of Thumb Mineral Processing. Metallurgical Content Crusher Selection Crusher Design Crusher InstallationCrusher CostsThe Crusher's Rock BreakersArea of Appliion Here is a list of Rules of Thumb often used in Rock Crushing and around Crushers Crusher Selection For a hard rock mine appliion below 600 tonneshour select a jaw as the primary crusher Over 1000 tph select a ...