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 …
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...
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 ...
Nevada Bureau of Mines and Geology
About NBMG. The Nevada Bureau of Mines and Geology is a research and public service unit of the University of Nevada and is the state geological survey. NBMG scientists conduct research and publish reports on mineral resources, engineering geology, environmental geology, hydrogeology, geologic hazards, and geologic mapping.
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.
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 …
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 ...
Gold: History of Use, Mining, Prospecting, Assay …
Early Gold Finds and Production. Gold was produced in the southern Appalachian region as early as 1792 and perhaps as early as 1775 in southern California. The discovery of gold at Sutter's Mill in California …
Geologic Hazards in New Mexico
Geologic Hazards. Aside from drought and flooding, natural disasters that affect large numbers of people seem to be infrequent in New Mexico. In part, this is because our population density is so low away from urban areas. However, we are still subject to many geologic hazards, including:
MONTANA STATE FACT SHEET
A moderate to high potential for the occurrence of undiscovered gold deposits in the Helena National Forest is indicated by historical mining, past and present exploration activities, and geologic, geochemical, and geophysical data from USGS regional studies. ... and location of natural hazards. Geologic mapping information is needed by ...
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 ...
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 …
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 …
Ground Collapse: Old mines and prospects and sinkholes
North Carolina has a rich history of mining for gold and other precious metals. Many of these historic locations have underground workings or locations with poor compaction or fill. ... Knowing the geology beneath the ground can assist in determining where surface geologic hazards may occur. Land Subsidence. Land subsidence, up to 0.25 inches ...
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 …
Mercury Contamination from Historical Gold Mining …
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 …
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 …
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 …
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 ...
Missouri Geological Survey
The department's Missouri Geological Survey is the official Missouri Mine Map Repository, established by the State Legislature in 1993 for the purposes of public safety and protection of property (section 256.112, RSMo).The Repository houses more than 2,000 maps of underground mines of various mineral commodities.The Missouri Geological Survey, …
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, …
Gold: History of Use, Mining, Prospecting, Assay & Production
Early Gold Finds and Production. Gold was produced in the southern Appalachian region as early as 1792 and perhaps as early as 1775 in southern California. The discovery of gold at Sutter's Mill in California sparked the gold rush of 1849-50, and hundreds of mining camps sprang to life as new deposits were discovered.
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. …
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 …
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, …
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 …
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.
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.
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 …
Risk Assessment Methods in Mining Industry—A …
A framework to quantify the risk of kriging-based mining projects due to the geological uncertainties: Open pit mine planning, Geological uncertainty, multivariate conditional simulation, grade/tonnage curves: Risk assessment: General: 62 : Journal of Mining Science: 2015: Geotechnical risk assessment process to suit the underground …
