Why is Copper-Sulfide Mining Such a Threat? Copper-sulfide mining, which is much more toxic than Minnesota's traditional form of iron mining, has never been done in the state. According to the EPA, sulfide mining is part of the most toxic industry in the country. Pollution from sulfide mining is nearly impossible to contain and can last for ...
What is metallic sulfide mining? Metallic sulfide mining — also known as hard rock mining — involves extracting valuable metals, like copper or zinc, from sulfide ores, which are rocks and sediments that contain minerals bonded with sulfur ions. To reach these ores, miners deplete the area's groundwater by pumping it out and then excavate ...
Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body. Sulfides are a geologic byproduct of mining in …
The proposal by Twin Metals Minnesota to build an underground copper-nickel mine near the Boundary Waters Wilderness has hit another–and potentially final–roadblock, thanks to the …
Sulfide Mining According to MiningMinnesota, "A sulfide is any compound or mineral in which a metallic ion is bonded with sulphur ions" (Mining...
Sulfide Mining Fact She. What is sulfide mining? "Sulfide mining" refers to mining metals that are foun. in sulfide-bearing rock. Mining metals in sulfide ores can be done in two ways: in underground mines where the ore deposits are very deep, and in open-pit mines when the …
Sulfide Mining Pros And Cons Imagine drifting slowly on a canoe while fishing one of Minnesota's crystal clear waters on a beautiful, sunny day. Now imagine being interrupted by the loud, ongoing sounds of drilling and being told the fish were too dangerous to eat.
"Copper-sulfide mining is the most polluting industry in the country and simply cannot be safely done in a water-rich environment like northeastern Minnesota. We will continue our legal fight and work in the legislature to update our antiquated laws so we can protect our clean water from this toxic industry." ...
Mining activities, including prospecting, exploration, construction, operation, maintenance, expansion, abandonment, decommissioning and repurposing of a mine can impact social and environmental systems in a range of positive and negative, and direct and indirect ways. Mining can yield a range of benefits to societies, but it may also cause conflict, not least …
According to a review on Earthworks regarding safety at 14 copper sulfide mines: A peer-reviewed study of the track record of water quality impacts from copper sulfide mines found severe impacts ...
The hot fluids—which can reach up to 750°F (400°C) under the pressure in the deep—rise buoyantly back to the seafloor. As they emerge from the crust, they encounter cold water, which causes metal sulfides to …
Mining the sulfide fields disturbs a smaller geographic area. But the nearby hydrothermal vents are home to a diverse and sensitive biological community. Many of these organisms are still unknown to science, and may …
Deep below the sea lay critical minerals that are both high in value and demand. These critical minerals—such as cobalt, nickel, and manganese—are used in everyday devices like cellphones and cars. But they are hard to come by, and demand is expected to double or triple by 2030. Because of this demand, interest has turned toward the deep ocean seabed, …
1. Introduction. Acid mine drainage (AMD) is usually generated by microbial and chemical oxidation of sulfide-bearing overburden and mine waste piles in mining area, which has caused serious damage to the surrounding ecosystem due to its high concentrations of sulfate, iron and toxic metals as well as strong acidity (Skousen et al., 2019; Hedin et al., 2020).
Copper-nickel mining (also known as "non-ferrous mining") in northern Minnesota is not a new issue for the state. Copper-nickel deposits have been known to exist in northern Minnesota since the 1800s, but it was not until 1948, when deposits were discovered near Duluth, that serious interest in mining these metals developed in the region.
More than five years since the federal government first proposed a 20-year mining ban across a large swath of federal land south of the Boundary Waters Canoe Area Wilderness, federal officials ...
Assessment of pyrite composition by LA-ICP-MS techniques from massive sulfide deposits of the Bathurst Mining Camp, Canada: from textural and chemical evolution to its application as a vectoring tool for the exploration of VMS deposits. Ore Geol Rev. 2018; 92:656–671. doi: 10.1016/j.oregeorev.2017.10.010.
Note: For the most up to date information on the Sierra Club's efforts to stop sulfide mining, please see our Stop Sulfide Mining page, and blog.. Since the founding of the North Star Chapter in 1968, Sierra Club volunteers have been actively involved in mining issues within Minnesota: protecting Duluth's drinking water from asbestos-like fibers in the Reserve Mining …
The sulfide-rich amine solution is then boiled to strip the sulfides off and regenerate the amine for reuse. ... These poor people mine sulfur in Kawah Ijen [1][2] (Ijen Crater) which is in a ...
Nickel is commonly present in two principal ore types—sulfide or laterite. Sulfide ores are typically derived from volcanic or hydrothermal processes and usually include copper (Cu) and/or cobalt (Co), and often precious metals such as gold (Au) or platinum (Pt), palladium (Pd) and rhodium (Rh) (the platinum group metals or PGMs) (Naldrett, 2002, Hoatson et al., …
Gold processing - Mining, Concentrating, Refining: The nature of the ore deposit determines the mining and mineral processing techniques applied. Oxide ore deposits are frequently of such low grade (e.g., 3 to 10 parts per million) that extensive mineral processing cannot economically be justified. In this case they are merely shattered by explosives and then piled into heaps for …
Second, engineering can reduce but not eliminate risk, especially with sulfide minerals mining. Pipe, valves, pumps, liners and other parts of a mine do wear out and fail, and often the failures ...
Ilyaas Farah 1711-60 1-31-16 Word count: 501 Sulfide Mining should be rejected Sulfide mining has a bad effect on both the economy and the environment. Sulfide mining is the process of removing copper, nickel, and other metals from sulfide ores. Minnesota 's traditional iron ore mining and sulfide mining are two very different types of mining.
Sulfide mines can produce acid, a dangerous contaminant for lakes and rivers when exposed to air or water. If there was a spill, potential water pollution would flow downstream through White...
Sulfide Mining Pros And Cons Imagine drifting slowly on a canoe while fishing one of Minnesota's crystal clear waters on a beautiful, sunny day. Now imagine being interrupted by the loud, ongoing sounds of drilling and being told the fish were too dangerous to eat.
Sulfide-ore copper mining has the potential to release numerous chemicals known to negatively affect human health, including mercury, arsenic, lead, asbestos-like fibers, and air pollution. These chemicals are included in the …
Coal is the world's largest energy source for electricity generation and is mined on 6 continents. Sulfate contamination of surface and ground water from these mining and processing operations is well recognized and commonly monitored as a primary indicator of coal mining impact to surface water and groundwater. However, under conditions frequently found …
The U.S. Forest Service has released a long-awaited environmental study of a proposed 20-year copper mining moratorium on federal land near the Boundary Waters Canoe Area. It is the latest step in ...
The presence of heavy metals in wastewater has been increasing with the growth of industry and human activities, e.g., plating and electroplating industry, batteries, pesticides, mining industry ...
Alongside the obviously negative impacts of mining, such as the loss of sulphide habitat and biodiversity, the search for commercially viable deposits and the environmental surveys carried out by or for mining companies, will have benefits for science (reviewed by Van Dover, 2007, Van Dover, 2011). The discovery of new SMS sites will occur at a ...
Sulfide mining, a method employed to extract metals such as copper, nickel, and gold from sulfide-bearing ores, poses a grave threat to our planet and its inhabitants. Unlike traditional mining practices, which may have their own set of challenges, sulfide mining unleashes a chemical onslaught upon the land, water, and air, leaving behind a ...
Minnesota has a long history of iron-ore mining. Sulfide-ore mining for copper and nickel, however, has never been attempted here. In the case of PolyMet, MCEA has led the fight for accountability and true science-based decision …
