What happens to the sand after the oil is removed from it in the tar sands project?



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    In these tar sand oil mining projects, it is rarely possible to be able to remove 100% of the oil from the sand. Most projects attempt to be as economically efficient as they can, by removing the maximum amount oil at the lowest cost possible. The processed sands are then either returned to the mines or separated and isolated in massive dump piles or settling ponds. After isolating these leftovers for long periods of time, liquids and solids somewhat separate a bit more allowing for possible further processing and reclamation.

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