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Overburden - Wild + Human Nature

Mar 11, 2019 · The stripping off of overburden (forest) to dig below it. Explosions meant to keep waterfowl off toxic tailings ponds, not always successfully. Toxic chemicals leaking to streams. Foul air. Barren, stark earth. Yet, as Sheena writes, Canada would have us see the tar sands as epical. Saving the economy. Saving the country. Saving lives.

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Fact or Fiction?: Oil Sands Reclamation on JSTOR

Dec 01, 2008 · In the northeastern quarter of Alberta, large deposits of oil sands, estimated at 173 billion barrels of recoverable oil,¹ lie underneath the boreal forest. The bitumen in the oil sands is a thick, tar-like substance bound with sand, clay and water.

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Syncrude Athabasca Oil Sands Mine, Alberta - Mining ...

Athabasca oil sands – Canada's largest oil sand reserves. The oil sands typically consist of around 10% bitumen contained in a mixture of 83% silica sand, 4% water and 3% fluvial clay, in a layer 40–60m thick lying beneath clay, sand and a surface layer of muskeg (water-logged peat).

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Oil Sands Mining Equipment Built Tough – Page 6 – MINING.COM

Sep 01, 2010 · The overburden is used to build haul roads and tailings dikes, while the oil sands, thick and heavy with tarry bitumen, are piled high in long benches using hydraulic or electric rope shovels ...

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Oil sands - Wikipedia

Oil sands, also known as crude bitumen, or more technically bituminous sands, are a type of unconventional petroleum deposit. Oil sands are either loose sands or partially consolidated sandstone containing a naturally occurring mixture of sand, clay, and water, saturated with a dense and extremely viscous form of petroleum technically referred to as bitumen. The oil sands are sometimes referred to as tar sands.

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Energy at a Glance: - Penn State College of Earth and ...

Oil sands (or "tar sands" or "bituminous sands") refer to a mixture of sand, water, clay, and bitumen (which we have seen refers to the heaviest of hydrocarbon mixtures found in crude petroleum). The mixture is usually between 1%...

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Oil Sand - an overview | ScienceDirect Topics

Dec 17, 2010 · The most important deposits of solid hydrocarbons are oil sands and oil shales from which oil can be extracted. Oil sands are basically sandstone deposits cemented with asphalt/tar, which are widespread in the United States (La Brea Tar Pits) and Canada (Athabasca oil sands). These deposits are strip-mined and processed for oil extraction.

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Canadian Natural Resources - Horizon Oil Sands

Horizon Oil Sands Horizon North Pit Extension (NPE) Project Canadian Natural is proposing a northeast mine pit extension (NPE Project) of the previously approved North Mine Pit at the Horizon Oil Sands Processing Plant and Mine (Horizon).

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What Does the Oil Sands Look Like? You'd Be Surprised ...

The first step in the Gateway Hill oil sands reclamation process was to put down a thick layer of overburden on the surface of the mine. In Gateway Hill's region, the overburden consists mostly of clay, sand and water with a high concentration of sodium sulfate, a type of salt.

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Oil sands 101 | Alberta.ca

Learn the oil sands process, from initial permit applications through to reclamation of the site. Using currently available technology and under the current economic conditions, there are 165 billion barrels of remaining established reserves in the oil sands deposits of Northern Alberta. An ...

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TV:BIP Ratio Explained: The Economics of Oil Sands Mining ...

Most mined oil sands deposits are located within 50 meters from the surface. The strip ratio (SR) is the simplest measure of mining efficiency. Defined as the weight of overburden (or waste ore) divided by the weight of oil sands ore, a strip ratio of 2 is considered high but feasible if the ore grade is high enough.

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ENV SCI Chpt. 11 Flashcards | Quizlet

42) A thick, asphalt-like oil that permeates tar sands is: a) overburden b) bitumen c) kerogen d) gas hydrate e) anhtracite

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Oil sands 101 | Alberta.ca

Roughly 500 km 2 of the 140,000 km 2 oil sands deposit in Northern Alberta is currently undergoing surface mining activity. This is about 3% of total oil sands surface area or 20% of oil sands reserves. Surface mining uses truck and shovel technology to move sand saturated with bitumen from the mining area to an extraction facility.

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Oil sands glossary | Alberta.ca

These terms appear on this site and are commonly used by the oil sands industry. Imperial unit of area measurement that equals 43,560 square feet. There are 640 acres in a section. Imperial measures are no longer used in Alberta legislation and area is now measured in hectares. Actual financial ...

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Potential Effects of Oil Sands on Aquatic Ecosystems ...

Oil sands development consumes large amounts of water and energy—currently, two to five barrels of water (natural sources and recycled water) are required for every barrel of oil produced by mining—and produces byproducts such as contaminated tailings.

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Surface Mining Techniques used in the Oil Sands | Oil ...

8 STEPS TO MINING THE OIL SANDS STEP 1: HARVEST MERCHANTABLE TREES AND REMOVE VEGETATION. STEP 2: REMOVE THE MUSKEG LAYER. STEP 3: DEWATER THE MINING AREA AND DEPRESSURIZE THE BASAL AQUIFERS. STEP 4: REMOVE THE OVERBURDEN. STEP 5: EXCAVATE THE OPENING CUT. STEP 6. MINE OUT THE OIL SANDS AND ...

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overburden | my oil sands

Apr 29, 2010 · The oil sands deposits are, for the most part, underground. The oil sands could be half a foot below ground level, or it could be several hundred feet down. A general rule of thumb is that north of Fort McMurray, the closer you are to the Athabasca river, the closer it is to the surface.

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Athabasca Oil Sands, Alberta, Canada | Earthshots ...

In the Athabasca region near Fort McMurray, the oil sands are less than 75 meters (246 feet) from the surface, close enough for surface mining. Surface mining techniques require the forest to be cleared. The soil and rock above the oil sand (overburden in mining jargon) is then removed.

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Oil sands land reclamation - Energy Education

Reclamation is the process of attempting to return land used for oil sands mining or tailings storage back to its original, natural state. The goal behind reclamation is to "return land back to nature". Disturbances that are a result of oil sands mining have significant impacts on the land, and reclamation is one way to mediate this impact.

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Delayed Coker Engineering Experience Horizon Oil Sands .

Mining – Completed, ready to mine oil sands and continues to move overburden Ore Preparation Plant – Completed, targeted to receive first oil sands in August Hydrotransport – Completed, ready to accept slurry Piperack – Completed, live and operational Extraction – Completed, ready for operation

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