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خانه / بایگانی برچسب: different kinds of mines

بایگانی برچسب: different kinds of mines

Stone extraction

Today there are different methods for stone extraction; It’s better to know some stuffs about mines and the history of stone extraction before proceeding these methods. Generally mine is the place where stones, sand and other minerals are extracted from. There are two types of mines: Open-pit mine and sub-surface …

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