Results 1 to 10 of about 153,181 (314)

Methodology for selection of the variant for opening the deeper parts of the Toranica mine [PDF]

open access: yesPodzemni Radovi, 2021
Opening an underground mine or part of it presents complex and responsible issue, which affects the economy and effectiveness of the mine operation. This paper presents a methodology for selecting the optimal variant for opening, the lead-zinc ore mine ...
Despodov Zoran   +3 more
doaj   +1 more source

Effect of different potassium forms on growth, some physiological aspects and productivity of Egyptian cotton [PDF]

open access: yesJournal of Plant Production, 2021
Two field experiments were carried out at El-Gemmeiza Agricultural Research Station, El-Gharbia Governorate, Egypt during 2019 and 2020 seasons, to evaluate the effect of foliar feeding with three sources of potassium [1- mineral source (potassium ...
A. Abd El All   +2 more
doaj   +1 more source

Sending Laurion Back to the Future: Bronze Age Silver and the Source of Confusion

open access: yesInternet Archaeology, 2021
Silver-bearing lead ores at Laurion in Attica were considered to have been first exploited with the introduction of coinage sometime around the birth of Classical Greece. However, in the late 20th century this chronology was radically revised earlier, to
Jonathan R. Wood   +2 more
doaj   +1 more source

Precious Stones in Chagatai’s Turkish Period Works

open access: yesİstanbul Üniversitesi Edebiyat Fakültesi Türk Dili ve Edebiyatı Dergisi, 2023
Since the creation of mankind, people have been interested in gemstones because of their properties, such as protection, decoration, use as accessories, and spiritual as well as physical healing.
Sümeyra Alan
doaj   +1 more source

Truths and misconceptions in the ore comminution [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2016
Inventions and now widely applied machines for ore comminution dated back to the second half of the 19th century. For the past 150 years, much theoretical knowledge was accumulated in the field of physics the solid bodies, physics of fracture, the theory
Magdalinović Nedeljko
doaj   +1 more source

Study of Cu Recovery Comparison of Fresh, Stockpiled, and Mixed Ores Processing in Batu Hijau Mine – Sumbawa Island, Indonesia [PDF]

open access: yesJournal of Pure and Applied Chemistry Research, 2022
Batu Hijau mine is one of the mining areas in Indonesia that have been operated for 20 years. The main concentrate product in Batu Hijau contains the primary minerals copper (Cu) and gold (Au). However, the mine is not only processing the fresh mined ore
Surya Hadi   +6 more
doaj  

On the concept of in-situ metal leaching

open access: yesГорные науки и технологии, 2020
The information on history of in-situ metal leaching method (ISL) was given. The role of Russian scientists and research organizations in research into ISL processes was shown.
O. Z. Gabaraev   +3 more
doaj   +1 more source

Machine Learning—A Review of Applications in Mineral Resource Estimation

open access: yesEnergies, 2021
Mineral resource estimation involves the determination of the grade and tonnage of a mineral deposit based on its geological characteristics using various estimation methods.
Nelson K. Dumakor-Dupey, Sampurna Arya
doaj   +1 more source

The Study of Parameters of Quarry Faces in Muruntau and Myutenbai Open Pits in Case of Applying Major Blasts

open access: yesГорные науки и технологии, 2019
The paper presents process layouts for excavation of zones near pit envelope based on the analysis of findings of the ore loss study in case of open-pit mining, as well as the results of field measurements in the quarry faces in Muruntau and Myutenbai ...
B. R. Raimzhanov   +2 more
doaj   +1 more source

Ninety years of mining and metallurgy in Trepča-sever conglomerate (part I) [PDF]

open access: yesPodzemni Radovi, 2017
Present company Trepča-Sever is formed by foreigners after the bombing of Serbia and Monten former Trepča Conglomerate located in northern part of Kosovo and Metohija, namely in three municipalities: North Kosovska Mitrovica, Zvečan and Leposavić.
Nikolić Branislav, Trajković Slobodan
doaj   +1 more source

Home - About - Disclaimer - Privacy