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My Job Deskriotion at PT Samana Citra AgungMENGATUR DAN MENGAWASI SEGALA AKTIVITAS PRODUKSI PADA SITE PENAMBANGAN SERTA KESELAMATAN SETIAP PEKERJA DI AREAL SITE DENGAN ARAHAN DARI ATASAN ATAU KEPALA TEKNIK TAMBANGProduct in PT Samana Citra AgungBelow is a selection of these projects1. Trass (Pozzolan)Pozzolans are silicate-based materials that react with (consume) the calcium hydroxide generated by hydrating cement to form additional cementitious materials. The benefits of pozzolan use in cement and concrete are threefold. First is the economic gain obtained by replacing a substantial part of the Portland cement by cheaper, pollution free, natural pozzolans or industrial by-products. Second is the lowering of the blended cement environmental cost associated with the greenhouse gases emitted during Portland cement production. A third advantage is the increased durability of the end product.2. Crushed StoneCrushed stone is used as aggregate in construction material uses.  The most common types of rock processed into crushed stone include limestone, dolomite, granite, and traprock.  Smaller amounts of marble, slate, sandstone, quartzite, and volcanic cinder are also used as construction aggregates.3. Iron SandIronsand also known as iron-sand and iron sand is a type of sand with heavy concentrations of iron. It is typically dark grey or blackish in colour. Iron sand is a material produced when titanium magnetite and ferro-titanium iron ore in volcanic stone such as granite and diorite—generated as magma cools in the depths of the earth at the upper mantle and the lower sections of the earth's crust—separates off as a result of weathering.Copyright 2017 PT Samana Citra Agung. All right reserved.