Aurora Gold Project
Aurora gold mine geology and mineralisation. ... Aurora gold mine is estimated to contain proven reserves of 5.2 million tonnes (Mt) graded at 2.9g/t of gold, and probable reserves of 31.58Mt graded at 3.01g/t of gold. The combined proven and probable contained gold reserves at the mine were estimated to be 3.53Moz, as of December 2016.
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Spotlight: Environmental geology
Environmental geology courses typically focus on 5 main areas: Human Population Growth, Sustainability, Earth as a System, Hazardous Earth Processes, Scientific Knowledge and Values. In …
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Utah Gold
Publications. Utah Geological Survey (UGS) Mines and prospects containing gold in Utah, UGS Open-file Report 207, 28 p., 2 maps, scale 1:750,000, 1991. Contains listing of 730 inactive mines and prospects that produced or contained gold. Locations, production and reserve data are given for the six active mines.
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Interactive Maps
All 25 / Energy Resources 5 / Geologic + Topographic Maps 2 / Groundwater + Wetlands 5 / Hazards 5 / Minerals + Mining 4 / Most Viewed 6 / Popular Geology 10 Abandoned Coal Mine Maps For 58% of Utah's abandoned coal mines.
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AZGS | Geosciences serving Arizona since 1887
A StoryMap tour of 30 prominent geologic and archaeological features near Flagstaff, Arizona. Natural hazards viewer showcasing earth fissures, active faults and earthquakes, flood potential and fire risk index. 1000s of original, historic Arizona mine files, photographs, and maps from the former AZ Dept. of Mines and Mineral Resources.
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Environmental Impacts of Gold Mining
The findings reveal substantial land degradation, water pollution, and a significant loss of forest cover, accounting for 27,333 ha (36%). Continuation of current …
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Geology and gold mineralization of the Gold Basin-Lost Basin mining …
Geology and gold mineralization of the Gold Basin-Lost Basin mining districts, Mohave County, Arizona, with a section on K-Ar chronology of mineralization and igneous activity, by E.H. McKee, and a section on Implications of the...
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Gold Mining and its Environmental Impacts
gold brought thousands of people to California, and with them came the potential for. economic growth and agricultural expansion. However the massive migration of people. …
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Bingham Canyon Mine Overlook
The mine still has about 700 million tons of ore in place. Mining this ore will take about 11 years, push the south wall of the pit out about 1,000 feet, and deepen the pit by about 300 feet. Dependent on external factors such as metal prices, 2028 could be the end of 121 years of open-pit mining at Bingham Canyon. How to Get To Overlook.
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Text visualization for geological hazard documents via text mining …
An increasing number of geological hazard documents about the mechanism and occurrence process of geological disasters contain unstructured geoscientific data that are not fully utilized. Text mining and visualization techniques offer opportunities to leverage this wealth of data and extract valuable information from dense, …
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Mercury contamination from historical gold mining in …
Mercury contamination from historical gold mines represents a potential risk to human health and the environment. This fact sheet provides background information on the use of mercury in historical gold mining and processing operations in California, with emphasis on historical hydraulic mining areas. It also describes results of recent USGS …
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USMIN Mineral Deposit Database | U.S. Geological Survey
An accurate, up-to-date mineral deposit database utilizing current geospatial technologies is needed to meet the needs of USGS research, state and federal land management agencies, private industry, and the general public. In the 1960's, the USGS and the U.S. Bureau of Mines developed national-scale mine and mineral deposit …
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Human and environmental exposure to rare earth …
Abstract. Rudimentary methods are used to exploit gold (Au) in several artisanal mines in the Amazon, producing hazardous wastes that may pose risks of …
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Hazards Science for a Changing World | U.S. Geological Survey
Hazards Science for a Changing World. By International Programs November 16, 2022. Overview. Natural disasters such as earthquakes, volcanoes, landslides, floods, and wildfires threaten lives, livelihoods, infrastructure, agriculture, and water resources resulting in billions of dollars in damage annually around the world.
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Seismic Hazard Assessment at Junction Gold Mine
Mining-induced seismicity at Junction Gold Mine became a serious operational problem in the late 1990's. Assessing the local seismic hazard is an important step in assessing the risk associated ...
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The men, mines, and geology of the Verde Mining District, Jerome
The town of Jerome roosts on the slopes of Cleopatra Hill in Yavapai County, Arizona; and is steeped in a rich history of copper, zinc, gold, and silver ore mining from an ancient volcanogenic massive sulfide deposit that formed on a …
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USGS provides $2 million to states to identify critical mineral
The US Geological Survey (USGS) has invested more than $2 million from President Biden's Bipartisan Infrastructure Law in cooperative agreements with 14 states to study the potential for ...
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Map & Database Services | AZGS
Natural hazards viewer showcasing earth fissures, active faults and earthquakes, flood potential and fire risk index. ... This interactive map is a joint product of the AZGS and the Arizona Mine Inspectors Office. Geologic Map of Grand Canyon. Geology of Grand Canyon; map(s) by G. Billingsley and colleagues at the USGS; interactive map stitched ...
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Risk Assessment from Primary Mining of Precious …
Anthropogenic Environmental Hazards. Chapter. Risk Assessment from Primary Mining of Precious Metal (Gold) and Possible Mitigation Route. Sadia Ilyas, …
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Mercury Contamination from Historical Gold …
Errata Sheet. Mercury contamination from historical gold mines represents a potential risk to human health and the environment. This fact sheet provides background information on the use of mercury in …
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Cyanide hazards to plants and animals from gold mining and …
Additional publication details. Highly toxic sodium cyanide (NaCN) is used by the international mining community to extract gold and other precious metals through milling of high-grade ores and heap leaching of low-grade ores (Korte et al. 2000). The process to concentrate gold using cyanide was developed in Scotland in 1887 and was used almost ...
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Gold King Mine release (2015): USGS water-quality data and activities
Web Tools. News. On August 5, 2015, U.S. EPA was conducting an investigation of the Gold King Mine near Silverton, Colorado. While excavating as part of the investigation, water began leaking from the mine tunnel, and about three million gallons of water and sediment were released into Cement Creek, a tributary of the Animas River.
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Geophysical Characterization of Mining-Induced Complex Geological …
Considering the growing energy demand and menaces of the geological hazards, this study focuses on mining-induced complex geological deformation engendering new unique geological changes. In this paper, a novel microseismological approach owning to address revolutionary changes due to mine excavation is presented …
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Gold Statistics and Information | U.S. Geological Survey
Statistics and information on the worldwide supply of, demand for, and flow of the mineral commodity gold. Gold has been treasured since ancient times for its beauty and permanence. Most of the gold that is fabricated today goes into the manufacture of jewelry. However, because of its superior electrical conductivity and resistance to corrosion ...
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Minerals & Geology Management | US Forest Service
The Geologic Resources program area provides expertise in the geosciences such as geology, geologic hazards, and groundwater. It administers caves and karst features, paleontological (fossil) resources, and other geologic special interest areas that occur on National Forest System lands and which serve as the landscape foundations that support …
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Open-Pit Copper Mining at Bingham Canyon
The Boston Consolidated Copper & Gold Mining Company, Ltd., was organized in London in 1898 by Newhouse to develop a high-grade, copper-gold ore body up the Carr Fork of Bingham Canyon. The property lay near the Highland Boy mine which Newhouse had successfully developed in the late 1890s and then sold to eastern capitalists.
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Sodium cyanide hazards to fish and other wildlife from gold mining
Highly toxic sodium cyanide (NaCN) is used increasingly by the international mining community to extract gold and other precious metals through milling of high grade ores and heap leaching of low grade ores. Of the 98 million kg cyanide (CN) consumed in North America in 1989, about 80% was used in gold mining (Knudson 1990). In …
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Using legacy 3D seismic data and source parameters of mining…
We analysed the source mechanisms of 75 large mining-related seismic events (M L 1.5–2.7) that caused damage to stopes in Kloof Gold Mine and used legacy 3D reflection seismic data to delineate the ore body and geological structures that may be correlated with mining-related seismic events. The 75 seismic events took place at depths of 1600 ...
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Idaho Geological Survey
IGS interactive web map applications. The Idaho Geological Survey migrated its interactive web map applications to the ESRI ArcGIS Online platform in 2023 to improve reliability of access to our services. New features include support for mobile devices and the ability to cross-query data between web maps. Disclaimer: The Idaho Geological …
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Arsenic hazards to humans, plants, and animals from …
Arsenic sources to the biosphere associated with gold mining include waste soil and rocks, residual water from ore concentrations, roasting of some types of gold …
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