An Introduction To Machining Practices
7. only one operator per machine is allowed. special jobs involving more than one operator require the permission of the shop supervisor. exception to this rule is only during instructional purpose and/or training sessions. these are basic safety rules which apply to.Ball mill ball mill is mainly used for grinding in mining (metallic minerals and non-metallic minerals), cement, refractories, chemical, power plant, aluminum ,building material, glass, ceramic, steel slag and fly ash, ect. ... we can provide both ball mill and vertical mill production process, while providing turnkey service from civil.