Sentences with phrase «from tailings»

This process is likely to be a major form of release of contaminants from the tailings over the long - term, thousands of years, yet is ignored in the EISs.

It has been used extensively to help mining companies figure out how sediment from tailings will fill up their storage ponds.

Floodwaters may also be contaminated with toxic waste washed from tailings left by gold and silver mining, says Linda Figueroa, a wastewater engineer at the Colorado School of Mines in Golden.

Not exact matches

He also said that the tailings, which are moved from the mine in a high - lying area by a river system to a cordoned - off area in lowlands, were benign.

The low - lying basin was meant to capture the tailings, mostly sand and clay but also some toxic chemicals left over after removing most of the bitumen, or tarry oil, from the ore.

A Pembina Institute study from 2009 estimated the costs to reclaim what was then 686 square miles of oil sands developments and 170 square miles of tailings ponds would run as high as $ 15 billion.

VANCOUVER — The report from an expert panel of engineers confirms that the Mount Polley tailings pond failure was avoidable, but leaves British Columbians with more questions than answers, said New Democrat leader John Horgan.

MONARQUES GOLD CORPORATION (TSX - V: MQR)(OTCMKTS: MRQRF)(FRANKFURT: MR7) is pleased to announce that it has retained BBA to conduct a conceptual study for the transportation of gold - bearing material from the Wasamac deposit to an existing processing plant with an authorized tailings management facility in the region for custom milling.

The project benefits from existing infrastructure, including a mill and tailings facility, paved highway access, and access to power, water and experienced labour.

According to a report from the ERCB released in June not only are the tailings ponds not disappearing they are actually growing in size.

Of course, there will still be by - products — such as the residual ore, or tailings, from the mining and separation as well as calcium carbonate, magnesium carbonate and magnesium hydroxide from the chemical process, along with that pesky thorium.

Conventional asphalt works fine, but Kjellberg is working with the Natural Resources Research Institute in Duluth to make a microwave - specific mix from recycled shingles and taconite tailings, especially since improved oil - refining technology is reducing asphalt supplies.

Because the world's uranium supply is finite and the continued growth in the numbers of thermal reactors could exhaust the available low - cost uranium reserves in a few decades, it makes little sense to discard this spent fuel or the «tailings» left over from the enrichment process.

Milling that metric ton from McArthur, which is reported to be roughly 20 percent uranium, would then result in 440 pounds (200 kilograms) of yellowcake and 1,765 pounds (800 kilograms) of toxic, radioactive tailings, at best.

Whether the uranium is stripped out of an open pit like the Ranger mine in Australia, removed from deep underground like McArthur River or chemically leached from its rocky home as at the Smith Ranch - Highland mine in Wyoming (the largest mine in the U.S.), yellowcake is the end product, along with a heap of radioactive tailings and, often, contaminated water.

Here are some other top successes: destroying stockpiles of chemical weapons globally as well as local stores of DDT in Tanzania; new cooking stoves to eliminate indoor air pollution in Ghana; separating copper mine tailings from the local water supply in Chile; alternative fuels to reduce air pollution in New Delhi as well as treating arsenic in well water in West Bengal; removing lead - contaminated soil in the Dominican Republic and Russia; reducing mercury vapors from artisanal gold mining in Indonesia; and new sewage systems to clean up contaminated Suzhou Creek in Shanghai.

To better understand the microbial diversity of these environments, researchers from the University of Manitoba isolated AAP strains from soil samples at four different sites within the Central Gold Mine tailings.

«These results have surprised us, and lead the way for many interesting applications such as optimising the processes for gold extraction from ore and re-processing old tailings or recycled electronics, which isn't currently economically viable.»

Spain - supported by an abstract for «Remediation of Inactive Uranium Mining and Milling Sites in Spain» from the «European Union International Symposium on Remediation and Restoration of Radioactive - contaminated Sites in Europe,» October 1993 (attached as Appendix C) which describes fully decommissioned mine and mill tailings facilities.

«Acid Generation and Contaminant Transport in Decommissioned Sulfide - Bearing Mine - Tailings Impoundments» a paper by D. Blowes from University of Waterloo at a 1995 Uranium Mining and Hydrogeology Conference in Freiberg, Saxony, Germany

The indoor radon action levels for US homes and schools were adopted in response to the use of radioactive uranium mill tailings sand in construction and soil fill for homes and schools in the western US; recognized in the 1970's as one of the first direct community health risks from the process of uranium mining.

The «llano» (plains) where we once grazed our cattle that were brought down from the «sierra» (mountain) during the winter season is now a radioactive pile of uranium mill tailings.

Thanks to a grant from the Citizens» Monitoring and Technical Assessment (MTA) Fund, Paul Robinson, Research Director, has compiled a comprehensive summary of the U.S. Department of Energy's (DOE) Uranium Mill Tailings Remedial Action Project (UMTRAP), entitled: «Uranium Mill Tailings Remediation Performed by the U.S. DOE: An Overview.»

The potential risks from hazardous uranium mill tailings and other radioactive and hazardous wastes never go away.

«Review of Data Which Indicates the Extent of Contamination to the North of the UNC Tailings Disposal Area in Pipeline Canyon,» Memo from Richard Raymondi and Ron Conrad, Ground - water, through Maxine Goad, Program Manager, to Tony Drypolcher, Acting Bureau Chief, Ground Water Quality & Hazardous Waste Bureau, NM EID, October 24, 1983.

Voices from the Earth, Spring 2004: Moquino Community Gets Involved in Uranium Mill Tailings Decision; Not in My Backyard... Not in Anyone's; and Judge Rules: Mining Clean - up Plan «Deficient»

Results: A recently published Pacific Northwest National Laboratory study of a naturally bioreduced sediment sample from a former uranium mill tailings site reveals insights that enhance understanding of the long - term persistence of uranium in groundwater.

Currently, a small secondary source is «uranium enrichment tailings» from Russia.

Letter to Director, Center for Disease Control (CDC), from Chronic Diseases Division, Bureau of Epidemiology, Re: Biological Assessment after Uranium Mill Tailings Spill, Church Rock, New Mexico, Dated December 14, 1980.

A team from the University of California - Berkeley, Lawrence Berkeley National Laboratory, PNNL, and Oak Ridge National Laboratory sequenced nearly 150,000 genes from three microbial communities in samples from a subsurface aquifer at a uranium mill tailings site in Rifle, Colorado.

Not sure if tailings is the right word, but its the residue from the steel industry.

Basically, the company reclaims zinc from iron ore tailings.

Its practice of dumping tailings from the mine at sea and waste rock in the jungle has attracted considerable controversy.

For two decades, Burtynsky's environmentally conscious photographs have grown from picturing quiet, seemingly benign hillsides with houses and dogs to the flagrantly poisonous, in the red river tailings of Sudbury, Ontario.»

Burtynsky's «Nickel Tailings No. 30» reveals warped topography from above.

A centerpiece of this show, Composting in the Pentagon with Worm Tailings (2017), displays dirt (or rather compost made from coffee grounds from a nearby café) as process and solution; we are invited to turn the dirt with a shovel.

It must heat several barrels of water to strip the bitumen from the sand and upgrade it, and afterward it discharges contaminated water into tailings ponds like the one near Mildred Lake.

Shell Canada has started its commercial - scale Atmospheric Fines Drying field demonstration for managing tailings from its oil sands operations.

It would be a lot simpler just to put the tailings back where they came from.

Sources of air contaminant emissions from oil sands developments include industrial smokestacks, tailings ponds, transportation, and dust from mining operations.

It's difficult to look out over miles of waste rock and tailings from a century of copper mining in the American Southwest and see anything but environmental destruction.

Do you think that deep sea dumping of mining tailings in the Bismark Sea off PNG as authorised by Ross Garnaut from Highland Pacific and Lihir plus river dumping by OkTedi also could contribute to sub 700 meter temperature increase?

From toxic tailings ponds that already cover 130 square kilometres, to fresh water use and the direct impacts of digging 100 metre open pit mines over thousands of square kilometres of boreal forest, the report details the environmental problems and other challenges that oil sands mining poses to northern Alberta.

Let's remember that Olympic Dam is a very large copper mine, that produces a little gold and silver and uranium as byproducts from the copper mine tailings waste.

11 Million Litres: the Tar Sands» Leaking Legacy CBC News — Millions of litres leak each day from oilsands tailings ponds: report by Environmental Defence

Whether its a municipally run landfill, agricultural residue in the form of mountains of coffee husks, oilfield cuttings and tailings, or acre upon acre of decomposing trees from pinebeetle infestation, it all represents an enormous global storehouse of energy.