1 edition of A guide to reclaiming small tailings ponds and dumps found in the catalog.
by Intermountain Forest and Range Experiment Station, Forest Service, U.S.D.A. in Ogden
|Statement||Gerald Harwood. --|
|Series||United States. Intermountain Forest and Range Experiment Station. U.S.D.A. Forest Service general technical report INT ; 57|
|Contributions||Intermountain Forest and Range Experiment Station (Ogden, Utah)|
|The Physical Object|
|Pagination||44 p. :|
|Number of Pages||44|
• Minimization of Operating Pond Levels Difficult to reclaim and close Typically reclamation and closure From GARD Guide Mine Tailings Fundamentals: Part 1 EPA CLU‐IN Webinar Mine Tailings - Geotechnical Recommended References. Tailings ponds are massive earth structures used to store coarse and fine solids contained in the oil sands deposit and recover water back to the main processing plant. These ponds are temporary storage facilities and need to be reclaimed when no longer in solids from tailings streams tend to trap large volumes of water, making pond reclamation challenging at best.
Harwood, G., A Guide to Reclaiming Small Tailings Ponds and General Technical Report INT—57, U.S. Forest Service, Intermountain Forest and Range Experiment Station, Ogden, Utah, Conversion of Gullies to Vegetation Lined, Burchard H, Waterways, USDA Forest Service, Research Paper RM—40, Rocky. "How to Build Ponds and Waterfalls is a great book for those about to build their first water garden. The chapter on waterfall building is the best I have ever seen." -- Allan Sperling, Director, National Pond Society & Owner, Pondscapes magazine "How to Build Ponds and Waterfalls is the book the industry has been waiting for. This is exactly Reviews:
Since oilsands mining operations started , trillion litres of fluid tailings has accumulated in these open ponds on the Northern Alberta landscape (Figure 1). This is enough toxic sludge to fill , Olympic swimming pools. In the mining process, ore mills generate huge amounts of waste, called tailings. These are most commonly dumped into ponds created from naturally existing valleys, and secured by dams. Other naturally sourced water, such as rainfall or snowmelt that was also collected in the ponds, needs to undergo the same treatment as the tailings.
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Guide to reclaiming small tailings ponds and dumps. Ogden, Utah: Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, (OCoLC) Although tailings ponds may have been abandoned for years and appear dry on the surface, suspended colloids may still be present at depth, result- ing in the submergence of heavy equipment when driven.
A guide to reclaiming small tailings ponds and dumps / Gerald Harwood. By Gerald Dennis Harwood. Abstract. 44 p. Topics: Mineral industries Author: Gerald Dennis Harwood. Chemicals reaching tailings ponds may undergo further reaction over an extended period of time changing their character.
Alleviation of the chemical and physical limitations of tailings followed by reclamation of the tailings and the associated landscapes is a challenging by: Water reclaim from the tailings disposal facility back to the mill will be maximized to reduce the volume of stored water.
Waste rock will be deposited in small dumps located in valleys above the open pit and in a large main dump to the east of the mine within the upper end of the tails area. The results showed that the tailings ponds showed a potential risk to nearby ecosystems because of their high acidity, salinity and Pb, Cd and Zn concentrations.
Geoelectrical profiles revealed that in none of the pseudosections were any regions betraying cracks that might affect the structure stability. Tailings ponds harbor microbes that have evolved to sense, uptake, and metabolize NAFCs, albeit very slowly.
Significantly, they can also reduce the toxicity of OSPW [ 5 ]. If bioremediation of OSPW is to meet the time requirement of the AER, the rates at which the microbes degrade NAFCs and detoxify the water must be enhanced.
After settling and self-weight consolidation, the dry density of the undesiccated tailings is a function of the G s of the tailings solids.
For coal tailings, the dry density is about t/m 3 due to their low G s, while for metalliferous tailings the dry density is up to t/m 3 due to their higher G s. Figures (a) and (b) show typical wet and dry density and w profiles with depth for.
W.E. Falck, in Environmental Remediation and Restoration of Contaminated Nuclear and Norm Sites, Mill tailings. Since waste management is an unproductive activity from a commercial point of view, operators understandably seek the least costly option for constructing tailings ponds that is in compliance with the applicable mining and civil engineering regulations (IAEA, b).
Tailings Storage Guidelines and Standards. Figure1: Key tailings management documents used in industry. Introduction. There exists a large volume of documentation relating to all aspects of design, construction, operation and closure of tailings facilities in the form of manuals, technical papers, conference proceedings and textbooks (Anglo ).
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an gs are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
The extraction of minerals from ore can be done two ways: placer mining, which uses water. Wapisiw Lookout was a storage area for oil sands tailings between and As production increased, Suncor enlarged this oil sands tailings pond. Dikes were built to create a wider and deeper basin until eventually the tailings pond was lifted about metres above the Athabasca River, with a circumference of about three kilometres.
Reclaim pond(s) The reclaim pond(s) (or return pond(s)) store the water that is being decanted from the TMF. Reclaim ponds are sometimes referred to as decant ponds which in most parts of the world is another name for the supernatant pond.
A reclaim pond is situated outside the confining walls of the tailings storage area a short distance away. Tailings handling techniques. Plough: A movable plough is used which directs the wet cake off the main conveyor on to a delivery conveyor, or direct discharge to the storage area.
This plough typically advances at a slow rate to allow a small conical pile of tailings to be formed in a. Suncor Energy marked an industry milestone Thursday when it became the first oilsands company to complete the surface reclamation of a tailings pond at.
Syncrude opened a $billion centrifuge plant at its Mildred Lake facility in to spin water out of the fluid fine tailings and dump the clay cake that’s left into mined-out sites.
The goal of the protocol for reclaiming in-pit tailings ponds to exceed federal and state regulations was to develop a series of steps that can be followed to design, operate, and reclaim a tailings disposal pond that will develop into grazing land with a wetland for open pit sand mines in warm dry climates.
Although nearly 4, hectares of land and 1, hectares of ponds and wetlands have been reclaimed, but not certified, the amount of land now covered by tailings ponds is daunting – more than square kilometres.
Calculating how to reclaim these ponds – lakes, in many cases – has become a head-scratching challenge for the industry. But John Shively, CEO of the Pebble Limited Partnership, noted that “inthe third largest earthquake in history rocked the nation of Chile, and the tailings pond at one of the world’s.
Engineered tailings impoundments have been around for about a century (MMSD ). The construction and care of a tailings dam is a relatively new phenomenon to society and to mining, which historically disposed of its waste in the most advantageous way, including piling wastes adjacent to the mines and discharging into nearby water bodies.
BGC Engineering Inc. (BGC) conducted a scoping study of the state of knowledge related to technologies for reclaiming oil sands tailings substrates to upland boreal forests and wetlands for the.Tailings Ponds As used in this guide, tailings ponds comprise embankments placed on the ground surface that are required to retain slurries of waste and water; they are constructed from tailings, borrow material, or some of each.
Some mines use deslimed tailings for underground fill, leaving only the finer material to be impounded on the surface.The book also offers recommendations for technical solutions for reclaiming radioactive tailing ponds, as well as for the development of disposal sites for radioactive waste in the tailing ponds.