Saturday, September 15, 2012

History of Mine tailings failures

 
 
 
Mine tailings dam failure and floodplain impacts on Soda Butte Creek, Montana and Yellowstone National Park
Related publication:  Marcus, W.A., Meyer, G.A., Nimmo, D.R., 2001, Geomorphic control of persistent mine impacts in a Yellowstone Park stream and implications for the recovery of fluvial systems: Geology, v. 29, no. 4, p. 355-358. (PDF file of article)
http://epswww.unm.edu/facstaff/gmeyer/tails/dambreak.htm

NRC FINES UNITED NUCLEAR $100,000 FOR FAILING TO SET ASIDE FUNDS FOR DECOMMISSIONING CHURCH ROCK URANIUM MILL

(Feb 14, 1997) "The Nuclear Regulatory Commission staff has proposed a fine of $100,000 against United Nuclear Corporation, of Gallup, New Mexico, for failing to properly comply with a January 1992 order to set aside $16.4 million needed to decommission and decontaminate the Church Rock uranium mill site near Gallup." [NRC Region IV Press Relase 97/10]
> View Notice of Violation EA 93-170

Kennecott Hides Potential for Deadly
Tailings Disaster
The Salt Lake Tribune is reporting that Kennecott Utah Copper Corp. has concealed, since 1988, the potential for an earthquake-caused major tailings disaster in Magna ...
www.northwoodswild.org/component/
content/article/57

Uranium Citizens Inquiry
We already have enough pollution disasters in our history. 1. Some 1.7 million tons of uranium tailings were dumped directly into the creeks and lakes of Port Radium, with ...
uww.raniumcitizensinquiry.com/submissions/
submission14.html

failure
Stava tailings dam failure, Trento, Italy. One of the worst tailings disasters in history
www.tailings.info/stava.htm

Major tailings dam failures

Jul. 21, 2011  Mianyang City, Songpan County, Sichuan Province, China , tailings dam damaged from landslides caused from heavy rains , tailings damaged residential roads and houses, forcing 272 people to leave; tailings were washed into the Fujiang River, leaving 200,000 people without drinking water supply

Oct. 4, 2010 Kolontár, Hungary, tailings dam failure , 700,000 cubic metres of caustic red mud , several towns flooded, 10 people killed, approx. 120 people injured, 8 square kilometres flooded

Dec. 22, 2008 Kingston fossil plant, Harriman, Tennessee, USA , retention wall failure , Release of 5.4 million cubic yards [4.1 million cubic metres] of ashy slurry , The ash slide covered 400 acres [1.6 square kilometres] as deep as 6 feet [1.83 metres]. The wave of ash and mud toppled power lines, covered Swan Pond Road and ruptured a gas line. It damaged 12 homes, and one person had to be rescued, though no one was seriously hurt.

April 14, 2005 Bangs Lake, Jackson County, Mississippi, USA , phosphogypsum stack failure, because the company was trying to increase the capacity of the pond at a faster rate than normal, according to Officials with the Mississippi Department of Environmental Quality (the company has blamed the spill on unusually heavy rainfall, though) , approx. 17 million gallons of acidic liquid (64,350 m3) . liquid poured into adjacent marsh lands, causing vegetation to die

2004, Nov. 30 Pinchi Lake, British Columbia, Canada , tailings dam (100-metres long and 12-metres high) collapses during reclamation work , 6,000 to 8,000 m3 of rock, dirt and waste water , tailings spilled into 5,500 ha Pinchi Lake

2004, Sep. 5 Riverview, Florida, USA , a dike at the top of a 100-foot-high gypsum stack holding 150-million gallons of polluted water broke after waves driven by Hurricane Frances bashed the dike's southwest corner , 60 million gallons (227,000 m3) of acidic liquid , liquid spilled into Archie Creek that leads to Hillsborough Bay

2004, March 20 Malvési, Aude, France , decantation and evaporation pond of uranium conversion plan, dam failure after heavy rain in preceding year , 30,000 cubic metres of liquid and slurries , release led to elevated nitrate concentrations of up to 170 mg/L in the canal of Tauran for several weeks

2000, Oct. 11 Inez, Martin County, Kentucky, USA, tailings dam failure from collapse of an underground mine beneath the slurry impoundment, release of 2.5 million m3 of liquid into an adjacent settling pond, subsequent release of 1.5 million m3 of water (carrying some residual slurry) from the settling pond into the environment

1997, Dec. 7 Mulberry Phosphate, Polk County, Florida, USA, 
phosphogypsum stack failure , 200,000 m3 of phosphogypsum process water , biota in the Alafia River eliminated

1997, Oct. 22  Pinto Valley, Arizona, USA , tailings dam slope failure external link , 230,000 m3 of tailings and mine rock , tailings flow covers 16 hectares

1994, Nov. 19  Hopewell Mine, Hillsborough County, Florida, USA , dam failure , phosphate , Nearly 1.9 million m3 of water from a clay settling pond , spill into nearby wetlands and the Alafia River, Keysville flooded

1994, Payne Creek Mine, Polk County, Florida, USA , Fort Meade, Florida, USA , IMC-Agrico, Florida, USA :  phosphate

1994, Feb. 14 Olympic Dam, Roxby Downs, South Australia copper, uranium , leakage of tailings dam during 2 years or more , release of up to 5 million m3 of contaminated water into subsoil

1993, Oct. Gibsonton, Florida, USA , phosphate , Fish killed when acidic water spilled into Archie Creek

1991, Aug. 23 Sullivan mine, Kimberley, British Columbia, Canada, dam failure (liquefaction in old tailings foundation during construction of incremental raise) , dam failure (liquefaction in old tailings foundation during construction of incremental raise)

1988-1980, Tennessee Consolidated No.1, Grays Creek, TN, USA , Montcoal No.7, Raleigh County, West Virginia, USA, Olinghouse, Wadsworth, Nevada, USA , dam failure

1981, Dec. 18 Ages, Harlan County, Kentucky, USA , dam failure after heavy rain , 96,000 m3 coal refuse slurry , the slurry wave traveled the Left Fork of Ages Creek 1.3 km downstream, 1 person was killed, 3 homes destroyed, 30 homes damaged, fish kill in Clover Fork of the Cumberland River

1980, Oct. 13 Tyrone, New Mexico, USA dam wall breach, due to rapid increase in dam wall height, causing high internal pore pressure , 2 million m3 , tailings flow 8 km downstream and inundate farmland

1979, July 16 Church Rock, New Mexico, USA,  uranium , dam wall breach, due to differential foundation settlement , 370,000 m3 of radioactive water, 1,000 tonnes of contaminated sediment , Contamination of Rio Puerco sediments up to 110 km downstream

1979 or earlier (unidentified), British Columbia, Canada , piping in the sand beach of the tailings dam, 40,000 m3 of ponded water , considerable property damage

1977, Feb. 1  Homestake, Milan, New Mexico, USA, uranium , dam failure, due to rupture of plugged slurry pipeline , 30,000 m3 ,

1975-1965, Silverton, Colorado, USA, Mike Horse, Montana, USA , Deneen Mica, North Carolina, USA , unidentified), Southwestern USA , Fort Meade, Florida, USA , (unidentified), East Texas, USA :  dam failure , CO:  tailings flow slide polluted nearly 100 miles (160 km) of the Animas river and its tributaries; severe property damage; no injuries

1972, Feb. 26 Buffalo Creek, West Virginia, USA , collapse of tailings dam after heavy rain (view Citizens' Commission report external link, 500,000 m3 , the tailings traveled 27 km downstream, 125 people lost their lives, 500 homes were destroyed. Property and highway damage exceeded $65 million. (see details external link)

http://www.wise-uranium.org/mdaf.html