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This forecast statistic shows the revenue of gravel and sand pit operation in Bulgaria from 2009 to 2014, with forecasts up until 2020. By 2016, revenues of gravel and sand pit operation in Bulgaria are projected to reach approximately million dollars.
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Sand is sized according to how it falls through a wire mesh called a sieve. A pile of sand does not have only one grain size but it has a distribution of sizes. To size the sand, it is shaken through a series of progressively smaller sieves that are stacked on top of one another.