scholarly journals TECHNOGENIC ANOMALIES IN THE ABANDONED TAILINGS OF GOLD MINING: ELECTROPHYSICAL AND GEOCHEMICAL DATA

2019 ◽  
Vol 2 (3) ◽  
pp. 246-252
Author(s):  
Tatyana Kuleshova ◽  
Nataliya Yurkevich ◽  
Svetlana Bortnikova ◽  
Olga Saeva
Keyword(s):  
Laboratory Experiment ◽  
Gold Mining ◽  
Mining Waste ◽  
Geochemical Data ◽  
Tailing Dump ◽  
Technogenic Anomalies ◽  
Mining Plant ◽  
Electrophysical Parameters

The tailing dump of the Komsomolsk gold-mining plant is considered. The aim of the work is to study the composition of mining waste and the directions of migration of drainage using electro-tomography and geochemical methods, as well as determining the variability of electrophysical parameters and composition of the man-made environment depending on temperature. The results of a laboratory experiment to determine the concentrations of CS2, C2H6S, (CH3)2SO above the surface of the waste substance are given.

scholarly journals Comparison of Bacterial Community Structure and Diversity in Traditional Gold Mining Waste Disposal Site and Rice Field by Using a Metabarcoding Approach

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Fatimawali ◽  
Billy Johnson Kepel ◽  
Maria Apriliani Gani ◽  
Trina Ekawati Tallei
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Waste Disposal ◽  
Gold Mining ◽  
Rice Field ◽  
Mining Waste ◽  
Mercury Contamination ◽  
Disposal Site ◽  
Small Scale ◽  
Waste Disposal Site

Traditional small-scale gold mining mostly use mercury to extract the gold from ores. However, mercury contamination in the environment can affect the composition and structure of the bacterial community. The purpose of this study was to determine the effect of mercury contamination on the bacterial community in the traditional gold mining waste disposal site and in the rice field. Mercury analysis was carried out using the CVAFS method. Analysis of bacterial communities and structure was carried out based on the results of metabarcoding of the V3-V4 16S rRNA regions obtained from paired-end Illumina MiSeq reads. The results showed that the sample from the mining waste disposal site had a mercury level of 230 mg/kg, while the sample from the rice field had 3.98 mg/kg. The results showed that there were differences in microbial composition and community structure in both locations. With the total reads of 57,031, the most dominant phylum was Firmicutes in the mining disposal site sample. Meanwhile, with the total reads of 33,080, the sample from rice field was dominated by Planctomycetes. The abundant classes of bacteria in the mining waste disposal site, from the highest were Bacilli, Gammaproteobacteria and Planctomycetia, while the sample from the rice field was dominated by the Planctomycetia and Acidobacteria subdivision 6. The families that dominated the sample in disposal site were Bacillaceae and Aeromonadaceae, while the sample from the rice field was dominated by Gemmataceae. The abundant genera in both locations were Bacillus and Gemmata. This study concluded that the high level of mercury in the soil reduced the richness and diversity of bacterial phyla and lower taxa. There was also a shift in the dominance of phyla and lower taxa in both locations. This study provides an understanding of the microbial community structure in the area that is highly contaminated with mercury to open insight into the potential of these bacteria for mercury bioremediation.

scholarly journals Recycling sterile gold mining waste for use as construction aggregate

2020 ◽  
Vol 12 (6) ◽  
pp. 631-638
Author(s):  
Efrain Casadiego Quintero ◽  
Carlos Alberto Ríos Reyes ◽  
Wilmar Gómez Ríos
Keyword(s):  
Gold Mining ◽  
Mining Waste

scholarly journals ORGANIZATIONAL MECHANISM AND TECHNOLOGY DEVELOPMENT OF PLACER GOLD MINING WASTE

2020 ◽  
Vol 12 (1) ◽  
pp. 116-127
Author(s):  
Sergey EVDOKIMOV ◽  
◽  
Tatyana GERASIMENKO ◽  
Yuri DMITRAK ◽  
Kazbek BAYMATOV ◽  
...  
Keyword(s):  
Gold Mining ◽  
Technology Development ◽  
Mining Waste ◽  
Placer Gold ◽  
Organizational Mechanism ◽  
Placer Gold Mining

Experimental Research of Pay Section Formation in Gold Mining Waste

2017 ◽  
Vol 53 (6) ◽  
pp. 1141-1146
Author(s):  
V. S. Alekseev ◽  
P. P. Sas ◽  
R. S. Sery
Keyword(s):  
Experimental Research ◽  
Gold Mining ◽  
Mining Waste

scholarly journals ISOLASI BAKTERI RESISTENSI MERKURI DARI LIMBAH PENAMBANGAN EMAS KABUPATEN BURU, MALUKU (Isolation of Mercury Resistance Bacteria from Gold Mining Waste in Buru District, Maluku)

2020 ◽  
Vol 27 (1) ◽  
pp. 33
Author(s):  
Rosita Mangesa ◽  
Kasmawati Kasmawati
Keyword(s):  
Gold Mining ◽  
Local Community ◽  
Mining Waste ◽  
Laboratory Scale ◽  
Mercury Resistance ◽  
Gold Extraction ◽  
Sampling Locations ◽  
The Impact

AbstrakPulau Buru merupakan salah satu pulau penambangan emas dan banyak dilakukan secara illegal dengan melibatkan penggunaan merkuri untuk alat bantu dalam proses ekstraksi emas melalui proses amalgamasi. Merkuri merupakan bahan kimia yang berbahaya dan bersifat toksik bagi manusia dan juga lingkungan, dan dampak dari penggunaan merkuri ini telah dirasakan oleh masyarakat setempat. Penelitian ini bertujuan untuk memperoleh bakteri yang resisten terhadap merkuri sehingga dapat digunakan dalam proses bioremediasi. Penelitian ini merupakan penelitian skala laboratorium dan dianalisis secara deskriptif. Hasil penelitian ini yaitu dari kedua lokasi pengambilan sampel diperoleh 17 isolat dengan morfologi yang berbeda-beda serta dari ke-17 isolat tersebut resisten terhadap merkuri.AbstractBuru Island is one of the gold mining islands and much of them are illegally that used mercury in gold extraction using uses mercury. Mercury is a chemical that is harmful and toxic to humans as well as the environment, and recently the impact of mercury use has been found by the local community. This study aims to obtain bacteria that are resistant to mercury so that it can be used in the bioremediation process. This research is a laboratory scale research and analyzed descriptively. The results of this study, namely from the two sampling locations obtained 17 isolates with different morphologies and from the 17 isolates were resistant to mercury.

scholarly journals Manager-Employee Relationships during Turbulent Times at a Gold Mine in South Africa

2019 ◽  
Vol 10 (6A) ◽  
pp. 81-88
Author(s):  
Cecile Schultz ◽  
Reulene Küsel
Keyword(s):  
South Africa ◽  
Content Analysis ◽  
Gold Mining ◽  
Qualitative Content Analysis ◽  
Inductive Reasoning ◽  
Employee Relations ◽  
Research Approach ◽  
Plant Manager ◽  
Employee Relationships ◽  
Mining Plant

This article aims to provide new conceptual insights into the responsibilities of an engineer who acts as a plant manager and who has to deal with employee relations during a turbulent time at a gold mining plant in South Africa. A qualitative research approach was used to gather the data in this study. Trustworthiness of the research was ensured by applying various reasoning strategies, such as content analysis, inductive reasoning, blending, bracketing and understanding in order to interpret the data. The first group interview comprised managers as well as engineers who were appointed as managers, the second, administrative employees from the service departments, and the third, artisans and foremen employed at the mine. Qualitative content analysis was used to analyse the transcripts. The recurring themes from the group interviews were ‘employee empowerment’, ‘trust building’, ‘employee voice’ and ‘development of skills’. A conceptual framework for manager-employee relations during troubled times was developed from the findings. The essential responsibilities of a gold mining plant manager during periods of turbulence were described.

scholarly journals Studying the mineral composition of gold mining waste

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 17-20
Author(s):  
A. A. Avazbekova ◽  
◽  
Kh. B. Juraev ◽  
Keyword(s):  
Mineral Composition ◽  
Experimental Research ◽  
Gold Mining ◽  
Mining Waste ◽  
Gold Ores ◽  
Refractory Gold Ores ◽  
Refractory Gold

The experimental research and analysis of the various technological schemes for processing of refractory gold ores allowed to be considered one of the most promising proposed autoclave-thiourea and autoclave-hypochlorite technological schemes.

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