Maha - Portland Slag Cement (PSC), conforming to the IS 455-1989, is manufactured from high quality clinker and superior quality granulated blast furnace slag. The slag used contains more than 95% glass content - the most desired parameter to manufacture PSC. The clinker and slag are separately ground to reach high fineness level and then blended in a high efficiency mechanical blender. This has not only enabled us to achieve high fineness (Blaine 3700+ cm2/g) in our Maha Cement but also steep particle size distribution (PDS) which helps Maha Cement achieve high early strength and excellent durability properties in concrete.