Limestone (+250mm to -1000mm) to be crushed and screened to get two type of size fraction CP grade (+40mm to -80mm) and SP grade (+10mm to -40mm) and to minimize -10mm size fractions. What type of primary crusher (jaw/gyratory/single roll/double roll/sizer/impactor) and secondary crusher (cone/single roll/double roll/sizer/impactor) combination is suitable? Crushing Capacity will be 1400 tph. ■