gold mining seismicity

Acid Mine Drainage - Earthlife Africa

Monitoring mine water, groundwater, surface water, seismicity, subsidence and other geotechnical impacts of mine flooding. This will help to assess changes in water quality and identify additional remedial measures that may be necessary. It recommends setting up a multi-institutional monitoring committee.

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v115n11a14 Rock engineering aspects of a modified mining ... - SciELO

Elandsrand Gold Mine) prior to 1998, but at deeper mining levels it was no longer feasible, since it would have resulted in unacceptably high stress ... The expected correlation with seismicity and mining conditions was illustrated by a number of workers (e.g. see Jager and Ryder, 1999). ERR cannot be used to

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Mine Seismology: Seismic Warning Concept: Case Study from Vaal Reefs ...

Eric Strom, Director Underground Mining, New Gold Inc. As a mining geotechnical practitioner having experience. in large open pit and underground massive mining operations, I have learned that mining induced seismicity can have a significant impact on the safety and economics of operations.

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Seismicity in Deep Gold Mines of South Africa: Implications for ... - USTC

the observed seismicity, which exceeds1,000 events per day, can be divided into two kinds of events, designated as types a and b. type a events are tightly clustered in time and space and generally...

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Mt Charlotte Gold Mine Extends operations till 2021

Mt Charlotte - the longest continually producing gold mine in Australia - opened in 1963 and has been threatened with closure on several occasions. over the past 54 years with gold price crashes and seismicity issues among the challenges. The mine has produced more than 5 million ounces of gold.

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SEISMIC RISKS POSED BY MINE FLOODING O.D. Goldbach Council for ...

some preliminary observations of fluid-induced seismicity in a South African gold mine are given. Finally, the seismic risks associated with mine flooding are highlighted, along with the implications for the South African Government. 2 Historical Evidence for Fluid-induced Seismicity Fluid-induced seismicity is a commonly observed phenomenon ...

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Deep mining, seismicity and reducing risk - Canadian Institute of ...

Apr 8, 2021Mining and seismicity Seismicity in underground mines is directly related to the mining process, as mining promotes local stress changes. In typical conditions, underground rock is very stable in a pre-mining state - where there is no mining, there are no seismic events.

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TauTona Gold Mine, Anglo Gold, South Africa - Mining Technology

The TauTona gold mine in South Africa was extended to a depth of 3.9km in 2008, making it the world's deepest mine at that time. The name TauTona means 'great lion' in Setswana. ... Both face length and face advance were negatively affected by seismicity during the year. The increased geological risk from this seismic activity ...

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Mining - Gold Fields

The KDC operation is engaged in underground and surface rock dump mining and is a large, established shallow to deep level gold mine that is accessed from surface via 13 shaft systems to the current lowest working level some 3,347 metres below surface. KDC comprises 11 producing shafts that mine varying quantities from open ground and pillars.

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Quantitative rockburst hazard assessment at Elandsrand Gold Mine

A quantitative rockburst hazard assessment procedure was introduced on Elandsrand Gold Mine at the end of 1994. It is currently used to evaluate the seismicity-related risk in production areas on the mine. ... Six parameters related to seismicity, geology, mining layout, and production are rated and results are used as a planning tool on a ...

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Source parameters of acoustic emission events and scaling with mining ...

1. Introduction [2] The prediction and control of mine seismicity requires input from numerical analyses of mining layouts to predict the rock mass response to mining. The development of numerical analysis techniques is progressing [e.g., Napier, 1998; Sellers et al., 1998; Spottiswoode, 1999], but the codes need verification to ensure that predicted behavior corresponds to real rock fracture ...

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Simulation of mining induced seismicity in deep South African gold mines

Includes bibliographical references (pages 167-172). dcntributor.advisor: Salamon, M. D. G. dcntributor.author: Oh, Hwan: dc.date.accessioned

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Personnel - Mining One

Personnel - Mining One. Mining One Pty Ltd was established in August 2005 and is an employee owned, independent group of over 65 technical consultants with offices in Melbourne (Head Office), Jakarta, Perth, Adelaide, Brisbane, Beijing, Vancouver and Toronto. Mining One has completed work in Australia and many countries/continents including ...

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2004:22 TECHNICAL REPORT Seismicity in Mines - DiVA portal

Seismicity is the rock mass response to deformation and failure. A seismic event is the sudden release of potential or stored energy in the rock. The released energy is then radiated as seismic waves. A rockburst is defined as a mining-induced seismic event that causes damage to openings in the rock.

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'Will I come back dead?' the human costs of South Africa's gold

Even if miners can restore profitability, the technology to mechanize South Africa's gold mines doesn't currently exist, according to Durrheim. AngloGold Says There's No Escaping Demise of South African Gold "With current mining methods, seismicity will continue to be with us," said Durrheim.

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Mining seismicity in the Witwatersrand Basin: monitoring, mechanisms ...

seismicity during the 120 year history of mining in the basin. It portrays a picture of the mining seismicity in terms of monitoring phases, mechanisms and mitigation strategies. The work of research organizations over the years is highlighted ... The story of gold mining in South Africa has been a tale of chasing the "banket" into the ...

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HELLAS GOLD - eit.hubgreece

Hellas Gold S.A. is a gold, silver, lead and zinc mining company headquartered in Athens, Greece. Since 2004, Hellas Gold operates the "Kassandra Mines" at N.E. Halkidiki, under the strictest EU safety and environmental standards and regulations. ... seismicity and ecosystems at 400 monitoring points, and is accessible to all through a ...

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Mining in the U.S. is going to get 'significantly better' - Hecla ...

Jul 1, 2022In June Baker spoke to Kitco at the Mining Investment Event of the North in Quebec City. Hecla (NYSE:HL) is the top U.S. silver producer, generating 40% of all the silver produced in the U.S. Last year the company produced 12.9 million silver ounces and 201,327 gold ounces. Sales were $807.5 million with net income of $35.1 million.

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Mining Ground Support - Mining Technology

Seismic monitoring equipment is used in order to identify both potential hazards caused by changing ground conditions, and to maximise mine production through preventing seismicity related delays. Seismic monitoring helps locate areas where rock mass failure is causing seismic events.

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Automated full moment tensor inversion of coal mining-induced seismicity

Seismicity induced by coal mining in the Ruhr region, Germany, has been monitored continuously over the last 25 yr. In 2006, a dense temporary network (HAMNET) was deployed to locally monitor seismicity induced by longwall mining close to the town of Hamm.

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Seismicity Management as Hill 50 Gold Mine, Western Australia

2 Seismicity background In the authors' time at Hill 50 Gold Mine, the only mining method employed for orebody extraction was that of uphole benching with 25 metre lifts. Stope voids were post filled with unconsolidated waste fill purely as a waste transport reduction method and as such provided very little support to the surrounding rock mass.

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Beaconsfield Gold Mine Drama | The Examiner | Launceston, TAS

The town of Beaconsfield depends on the mine but residents have been asking questions about mining-induced seismicity since the October earthquake. ... Beaconsfield Gold Mine manager Matthew Gill ...

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Seismicity associated with mining - ScienceDirect

MINING-INDUCED SEISMICITY Seismicity induced by mining may be defined as the incidence of seismic events caused by rock movements or failures resulting from changes in the state of stress in the rock near mine excavations brought about by the presence of those excavations.

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Nanoseismicity and picoseismicity rate changes from static ... - DeepDyve

Static stress changes following large earthquakes are known to affect the rate and distribution of aftershocks, yet this process has not been thoroughly investigated for nanoseismicity and picoseismicity at centimeter length scales. Here we utilize a unique data set of M ≥ −3.4 earthquakes following a Mw 2.2 earthquake in Mponeng gold mine, South Africa, that was recorded during a quiet ...

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All that glitters... Acid mine drainage: The toxic legacy of gold ...

The task force reports that in the largest mining district, the Central Basin, pumping ceased in 2008 and the water level in the mines is rising at about 12 meters per month. At this rate, it will reach the surface and decant by March 2013. Pumping in the Eastern Basin, which has already experienced induced seismicity, ceased early in 2011.

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More than R250m dedicated to deep-level mine research

The mining industry is spending more than R250 million through the Mine Health and Safety Council on research into seismicity associated with deep-level mines, according to Minerals Council South ...

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role of static stress transfer in mining induced seismic events ...

The analysis of seismicity from a South African gold mine has shown that the seismicity at given active faces is affected by seismicity at other mining faces and the maximum influence has been observed up to 21 d after seismic events occurrences ( Kijko & Funk 1996 ). Based on these results in analysis we have used a time window of 30 d.

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AngloGold Ashanti confirms bodies of three miners recovered ... - Miningmx

Seismicity, however, has long bedevilled South Africa's gold mines and despite sophisticated predictive monitoring it occasionally occurs striking with complete surprise. The incident at Mponeng caused isolated damage - one panel was affected - and comes after the mine nearly completed two-years of fatality-free mining (about 698 days).

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Fosterville Gold Mine incident - Environment Protection Authority

If your report is about blasting, vibration or mine-induced seismicity, these matters are regulated by ERR: It can be reported to ERR via their online form. Call 1300 366 356. Email [email protected]. If your report relates to residential noise, this may also be reported to Greater Bendigo City Council.

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Can mining trigger earthquakes? - Earth Science Stack Exchange

So yes, the difference would be that there are more seismic waves creating earthquakes in a mining region compared to you're average city, because less mining is occurring in a city that in a mountain. But when no mining is in progress an a mining region, there will be less human-induced earthquakes. Share Improve this answer

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An Approach To Assessment Of Post Mining-Induced Seismic Hazard In ...

Post mining induced seismicity observed in Kolar Gold Fields worked out mine still being felt since closure of deeper levels is discussed. As mining depth increases especially in hard rock mines, magnitude of stress increases, hence, the occurrence and severity of postmining induced seismicity also increases.

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6. Seismic analysis - Seismic Risk Management Process

6. Seismic analysis. Generic ground motion prediction equation used for ground velocity, no site-specific calibration performed. The seismic analysis step is where the seismic data is used to assess the seismic hazard and to understand the sources of seismicity and response to mining. The assessment of seismic hazard is generally divided into ...

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MINE SEISMICITY: PREDICTION OR FORECASTING? S Spottiswoode Abstract - SAIMM

The title of this paper (Mine seismicity: prediction or forecasting?) was chosen because ... Seismic data was obtained from five mines representing a range of deep mining methods from gold and platinum mines. Two case studies came from gold mined from the Carbon Leader Reef (CLR1 & CLR2) and one each from the Ventersdorp Contact ...

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Mining seismicity in the Witwatersrand Basin: monitoring ... - CORE

seismicity during the 120 year history of mining in the basin. It portrays a picture of the mining seismicity in terms of monitoring phases, mechanisms and mitigation strategies. The work of research organizations over the years is highlighted ... The story of gold mining in South Africa has been a tale of chasing the "banket" into the ...

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Mining-Induced Stress Transfer and Its Relation to a $$text ... - DeepDyve

On 27 December 2007, a $$text{M}_w$$ M w 1.9 seismic event occurred within a dyke in the deep-level Mponeng Gold Mine, South Africa. From the seismological network of the mine and the one from the Japanese-German Underground Acoustic Emission Research in South Africa (JAGUARS) group, the hypocentral depth (3,509 m), focal mechanism and aftershock location were estimated. Since no mining ...

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Striking Gold and Fear in S. Carolina - The New York Times

Jun 5, 1991Its "carbon-in-pulp" technology allows the gold to be extracted from the ore using sodium cyanide in large leach tanks. The residue and cyanide solution is then deposited in a huge 381-acre tailing...

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Trading statement for the year ended 30 June 2022 - Harmony Gold Mining ...

Harmony Gold Mining Company (JSE:HAR) News - Trading statement for the year ended 30 June 2022 Harmony Gold Mining Company Limited Registration number 1950/038232/06 Incorporated in the Republic of South Africa ISIN: ZAE000015228 JSE share code: HAR ("Harmony" and/or "the Company") Trading statement for the year ended 30 June 2022 Johannesburg, Wednesday, 24 August 2022.

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Artificial Water Reservoir-Triggered Seismicity (RTS ... - SpringerLink

Jan 20, 2022The reservoir-triggered seismicity (RTS) is most prominent, having been reported from hundreds of with at least five sites where earthquakes exceeding M 6 occurred, claiming human lives and destruction of properties. The most important correlate for RTS to occur is the height of water column in the reservoir.

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Major Mines & Projects | Bambanani Mine

Production was negatively impacted, decreasing 20% year on year as a result of increased seismicity. As such, the mine will officially be placed on care and maintenance from 1 July 2022. Owners . Source: p. 14. Company Interest Ownership; ... The Basal Reef is the predominant gold-bearing reef at Bambanani. The Steyn facies of the Basal Reef ...

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The Plan to Build a Gold Mine on a Seismic Fault in Greece

18 February, 2018 The Plan to Build a Gold Mine on a Seismic Fault in Greece "The problem is that we can never predict when an earthquake can strike." The graffiti is splashed along the highways and side roads, riddled with potholes, that snake through the mountains and seaside villages of eastern Halkidiki, a region of northern Greece.

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