Mining was Zimbabwe's leading industry in 2002, contributing 27% of export trade. The chief minerals were coal, gold, copper, nickel, tin, and ...
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Gold is the most malleable of all metals; a single gram can be beaten into a sheet of 1 square meter, and an avoirdupois ounce into 300 square feet.
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Angola seeks to stimulate diamond, ornamental stone exports. By: Rebecca Campbell 17th August 2018 The Angolan newspaper "Jornal de Angola" has ...
Overview of the Gold Rush by Curator Emeritus Gary F. Kurutz. Features examples drawn from the California History Section's special collections.
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UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II Surface Mining Methods and Equipment J. Yamatomi and S. Okubo ©Encyclopedia of Life ...
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The NIOSH Mine Safety and Health Technology Innovations Award recognizes mines and companies that have made an extraordinary effort to apply technology or ...
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Weapons, armor and some other items can sometimes be crafted using materials that possess innate special properties. If you make a suit of armor or weapon ...
Mining in the Philippines began around 1000 BC. The early Filipinos worked various mines of gold, silver, copper and iron. Jewels, gold ingots, chains ...
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