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constructing a ballmill for gold mine

how soap is made material, manufacture, making, a foam substance formed at the top of the pot. when cooled, it hardened into soap. around 1790, french soapmaker nicolas leblanc developed a method of extracting caustic soda sodium hydroxide from common table salt sodium chloride, replacing the wood ash element of soap. the french chemist eugenemichel chevreul put the soapforming process

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