Results 111 to 120 of about 86,925 (244)
Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region [PDF]
, 2018 Purpose. It is found that for long term standing, the pit bench profile is close to the boundary of the disturbed zone. Therefore, long stability of the bench can be estimated in respect to the size of the disturbed area and the boundary of residual ...
Karimov, Sh, Ravshanova, M, Zairov, Sh
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Journal of Phycology, EarlyView.Abstract The invasion of the red macroalga Gracilaria vermiculophylla provided an opportunity to investigate the influence of benthic habitats on the reproductive mode, population structure, and colonization dynamics in haploid‐diploid life cycles.
Alexis P. Oetterer +3 more
wiley +1 more source
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019 There are two Artisanal Small scale Gold Mining (ASGM) location in Lamuntet, Brang Rea Subdistrict, West Nusa Tenggara Regency, namely Nglampar and Song location.
Rika Ernawati +2 more
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Restoration Ecology, EarlyView.Abstract Introduction Revegetation using native vegetation is a commonly used technique to reclaim landscapes degraded by mining activities. Revegetation efforts in the arid Southwestern United States face physical, geochemical, hydrological, and biological challenges unique to drylands.
Sierra T. Lauman +3 more
wiley +1 more source
Руды и металлыA detailed analysis of the geological and structural position of gold and tungsten deposits in the Golden Valley ore field of the Midlands greenstone belt has demonstrated that most of the gold deposits are controlled by arc-shaped faults that taken ...
Ignatov P. A. +3 more
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The Geologic Features of the Occurrence of Copper in North America [PDF]
, 1933 Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
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Renaissance Studies, EarlyView.Abstract Pedro de Ayala served as a diplomat for King Ferdinand II of Aragon and Queen Isabella I of Castile at the courts of Henry VII, King of England, and James IV, King of Scots. In July 1498, he wrote a letter, partly in cipher, to report to his king and queen on such matters as Spain's interests in international diplomacy; the characters and ...
Adrian William Jaime +2 more
wiley +1 more source
(Rare types of tetrahedrite-tennantite ores of a gold ore deposit.
, 2020 These sulphosalts occur as: 1) tiny segregations in sphalerite, galena and pyrite; 2) thin veinlets cutting these minerals; 3) rims on these minerals and 4) irregular intergrowths with chalcopyrite. Probe analyses of 23 grains shows that the Zn contents of these tetrahedrites and tennantites range 0.2-8.1%, with the Zn per formula unit often >1. Almost
Borisova E.A. +2 more
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China Geology: Since the first discovery of gold deposits on the northeastern margin of the Jiaolai Basin in Shandong Province at the end of the 20th century, seven medium-sized to large/super-large gold deposits have been identified in this region, with cumulative ...
Jun-wei Bo +5 more
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„Invisible“ gold in ore minerals from Chelopech deposit
Review of the Bulgarian Geological SocietyThe concentrations of trace elements in pyrite from blocks 7, 8, 17, 18, 19-SE, 19-NW, 19-NE, 19-SW, 103-W, 103-E, 144, 146, 147, 148, 149-south, 150, 151, 153 and 700 of copper-gold high-sulphidation Chelopech deposit were determined by LA-ICP-MS technique.
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