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SBB's steel glossary is great for finding the definition for any steel term associated to the industry.
Carbonates are salts of carbonic acids (H 2 CO 3). Carbonates are very useful salts, specially calcium carbonate (CaCO 3). Sources of Calcium Carbonate:
Lime (Burnt lime, quicklime) Aerated Concrete Blocks Quicklime is mixed with cement, sand, water and aluminium powder to give a slurry which rises and
Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock ...
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ENVIRONMENT AND RAW MATERIAL COMMITTEE Factsheet on: What is Gypsum? DATE: 16-07-2007 I. Natural Gypsum A. Introduction The mineral Gypsum precipitated .
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