gold and daimaan mining in southafrica in 19th century com in تولید کننده درک توانایی تولید قوی ، قدرت تحقیق پیشرفته و خدمات عالی ، شانگهای gold and daimaan mining in southafrica in 19th century com in تأمین کننده ارزش ایجاد می کند و برای همه مشتری ارزش ایجاد می کند.
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Gunpowder or black powder, used from the 17th century to the mid 19th ... ANFO, used from the 20th century, and the primary explosive in use today ... Commonly used for gold and copper; Amalgamation, using liquid mercury ...
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