MiningSub-level caving operations for gold extraction in the Abitibi region of QuebecOctober 30, 2009 - 10:29am — KatieOperated by Agnico Eagle Ltd., the Goldex mine uses a sub-level caving method employing three large stopes and long blast holes to extract gold particles contained within quartz-tourmaline veins. The site is located near Val-d’Or in the Abitibi region of Northwestern Quebec, Canada and has been in commercial production since mid-2008. Background Controlled Solution Salt Mine Collapse in RomaniaOctober 27, 2009 - 8:46am — KatieThe Ocnele Mari salt deposit located in the sub-Carpathian hills of southern Romania actively extracted salt through dissolution in four fields beginning in 1954. Following the removal of 13.5 million tones of salt from Field II, operations were permanently halted after a major collapse in 1991. These events highlighted the risks associated with the presence of a dissolution chamber near to a densely populated area and provided an opportunity to safely monitor corrective actions to reduce risks using a microseismic system. Background Rockburst re-entry protocol at a deep underground Nickel mine in Sudbury, OntarioOctober 23, 2009 - 9:00am — KatieCurrently operated by Vale Inco Limited, Creighton nickel mine in Sudbury, Ontario is Canada’s deepest mine. In operation since 1901, Creighton mine has a long history of rockburst events due to the geological structure of the mine. The microseismic monitoring system was expanded in 1999 to monitor mine-wide operations and provide insight into rockburst re-entry conditions, thus playing a significant role in the management of hazard and risk associated with deep mine operation. Background Use of a destress slot for underground gold mining in Northern OntarioOctober 22, 2009 - 9:36am — KatieOperated by the Newmont Mining Corporation until 2006, the Golden Giant gold mine was located in the Hemlo gold deposit approximately 40 km east of Marathon Ontario. Situated between the Williams and David Bell mines, the Golden Giant mine produced over 6 million ounces of gold over 21 years of operation. Background Underground coal mining in Anhui Province, ChinaOctober 22, 2009 - 9:05am — KatieCurrently operated by the Huainan Coal Mining Group, the Xin Zhuang Zi and Wan Fang Gun coal mines in Huainan, China recently incorporated ESG microseismic monitoring systems into their operations. These systems are used to assess the microseismic activity associated with underground longwall coal excavation, and play a significant role in the management of hazard and risk associated with coal mine operation. Background Microseismic analysis to identify the caving front associated with cave mining operations in New South WalesOctober 22, 2009 - 8:38am — KatieOperated by Newcrest Mining Ltd., the Ridgeway gold mine uses a block-caving method to extract a gold-copper deposit in central New South Wales, Australia. An ESG microseismic system was implemented to compliment existing geomechanical monitoring tools, to study the ability of microseismic analysis to characterize the cave front over time. Background Microseismic monitoring of remnant pillar block-caving in mining operations in shizhuyuan mine chinaDecember 11, 2008 - 2:39pm — shan.jhamandasA seismic system has recently been installed at Shizhuyuan mine in Hunan Province, the site of a world famous poly-metal deposit extremely rich in rare metals. The Shizhuyuan mine is located under a mountain and lies in a relatively low-stress environment. The need for minerals in recent years led to a faster advancement of the excavations than previously anticipated, which pushed mining activities to deeper levels. A series of large remnant pillars are currently mined out at depth in transition from a room-and-pillar to block caving mining method. ESG deploys a portable microseismic mine monitoring system at the Central Institute of Mining and Fuel ResearchOctober 8, 2008 - 6:01pm — brianESG has successfully deployed the first portable microseismic mine monitoring system for the Central Institute of Mining and Fuel Research in Asansol India. The mine monitoring system was specifically made mobile by mounting the acquisition systems and centralized computer in a bus, enabling it to be transported to various locations for different monitoring projects. Underground MonitoringESG provides microseismic monitoring of underground gold, silver, palladium, copper, nickel, potash, coal, salt, trona and limestone mines from around the world. These systems are used to monitor a wide range of mining activities such as:
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