Welcome to the Oregon Department of Geology and Mineral Industries! Find information about Oregon's geology, natural hazards, and mineral resources regulatory programs.
WhatsAppGet PriceGet A Quote
2024926· DENVER, Colo. — Thanks to investments from President Biden’s Bipartisan Infrastructure Law, the U.S. Geological Survey today released a web mapping application, a …
WhatsAppGet PriceGet A Quote
83· 2. Ground Control Hazards. Mining activities pose several ground control hazards compromising workers’ stability and safety. One significant risk is ground collapse when the surrounding geological strata are under too much …
WhatsAppGet PriceGet A Quote
200411· 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 …
WhatsAppGet PriceGet A Quote
2024920· To understand the contamination caused by historic mining in California, researchers sampled sediment, water, and biota (animals) during the years 1999–2004 and …
WhatsAppGet PriceGet A Quote
2020411· New digital geologic maps encompass gold/silver mining districts of Mohave County Geologic hazards. Flash floods are the chief geologic hazard encountered in the …
WhatsAppGet PriceGet A Quote
Geology is key to reducing risks from Nevada’s natural and anthropogenic hazards (earthquakes, flash floods, drought, land subsidence, erosion after wildland fires, landslides, swelling and …
WhatsAppGet PriceGet A Quote
The state has a long history of mining that started during the 1858 Colorado Gold Rush (also known as the Pikes Peak Gold Rush) before the area was established as a territory.
WhatsAppGet PriceGet A Quote
This map emphasizes Wyoming’s oil and gas fields, hydrocarbon reservoirs, and associated infrastructure. It supplements, extends and replaces the WSGS’s traditional oil and gas map. …
WhatsAppGet PriceGet A Quote
Covers the main part of the Gold Hill mining district. Mineralization in the Gold Hill mining district, Tooele County, Utah, UGS Bulletin 83, 37 p., 1970. One of the oldest mining sites in the state. …
WhatsAppGet PriceGet A Quote
Gold is relatively scarce in the earth, but it occurs in many different kinds of rocks and in many different geological environments. Though scarce, gold is concentrated by geologic processes …
WhatsAppGet PriceGet A Quote
315· Background: In 2017 around 14-19 million miners were exposed to multiple hazards in artisanal and small-scale gold mining (ASGM). ASGM is characterized by basic and …
WhatsAppGet PriceGet A Quote
62· Abstract Control of OHS risks in the mining industry has been attracting increasing attention in recent years. Because of their great diversity in a complex system, hazards can be difficult to identify and classify, especially …
WhatsAppGet PriceGet A Quote
Hazards. Colorado has diverse geologic structures, rocks, soil types, topography, and climatic conditions that combine to create a range of dynamic natural processes. The state has a …
WhatsAppGet PriceGet A Quote
The Idaho Geological Survey migrated its interactive web map applications to the ESRI ArcGIS Online platform in to improve reliability of access to our services. Areas of historical …
WhatsAppGet PriceGet A Quote
The results showed that mine spoil contaminations and their ecological and health risk significantly varied (p < 0.01) from each other and fell in the order OXS > URS > AVS > forest …
WhatsAppGet PriceGet A Quote
2024112· A major challenge in deep and high stress mining is managing seismic risk associated with blasting of production stopes and drift development to access the ore zones. …
WhatsAppGet PriceGet A Quote
62· Control of OHS risks in the mining industry has been attracting increasing attention in recent years. Because of their great diversity in a complex system, hazards can be difficult to identify and
WhatsAppGet PriceGet A Quote
418· Gold mining activities can result in environmental issues, including environmental pollution and hazard to human and ecosystem health, which if not regulated …
WhatsAppGet PriceGet A Quote
62· Control of OHS risks in the mining industry has been attracting increasing attention in recent years. Because of their great diversity in a complex system, hazards can be …
WhatsAppGet PriceGet A Quote
2025512· U.S. Geological Survey scientists are seeking to understand the impacts of mercury mining on headwater streams, organisms, and food webs, focused on potential …
WhatsAppGet PriceGet A Quote
The hole was above the old Phoenix Gold Mine, which closed in 1906. In the 1980s a suburban golf course community was built over the mine. Fortunately, the house was not built directly …
WhatsAppGet PriceGet A Quote
Mercury hazards from gold mining to humans, plants, and animals Rev Environ Contam Toxicol. 2004:181:139-98. doi: 10.1007/0-387-21733-9_4. Author Ronald Eisler 1 Affiliation 1 U.S. …
WhatsAppGet PriceGet A Quote
2025215· Water inrush presents serious safety risks, including sudden flooding of tunnels, which can result in fatalities, disrupt mining activities, and destabilize the surrounding rock …
WhatsAppGet PriceGet A Quote
199911· 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 …
WhatsAppGet PriceGet A Quote
412· Gold occurs in several geologic environments in Maine: in bedrock, in sediments that were eroded from bedrock by glaciers, and in stream deposits derived from either of these …
WhatsAppGet PriceGet A Quote
1028· Mining is an important activity at the present time that causes severe environmental stress. The heavy metals (metalloids) easily released into the environment, …
WhatsAppGet PriceGet A Quote
Gold is relatively scarce in the earth, but it occurs in many different kinds of rocks and in many different geological environments. Though scarce, gold is concentrated by geologic processes to form commercial deposits of two …
WhatsAppGet PriceGet A Quote
The Hazard Gold Mine, located near Foresthill, California, is situated in the Michigan Bluff Mining District, which is now encompassed by the Tahoe National Forest. Operating as an …
WhatsAppGet PriceGet A Quote
Contact the Washington Geology Library for help or questions with the Portal: [email protected] or (360) 902-1473. Note that you can also contact your local …
WhatsAppGet PriceGet A Quote
WhatsAPP 24h online service
24h Online Chat
