книги Наука, техника, медицина Техника Транспорт Воздушный транспорт

Hushing

Код 1422354

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Аннотация к книге "Hushing"

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Hushing is an ancient and historic mining method using a flood or torrent of water to reveal mineral veins. The method was applied in several ways, both in prospecting for ores, and for their exploitation. Mineral veins are often hidden below soil and sub-soil, which must be stripped away to discover the ore veins. A flood of water is very effective in moving soil as...

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Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1337-0212-7
Объём: 116 страниц
Масса: 196 г
Размеры(высота, ширина, толщина), см: 23 x 16 x 1

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