slag heaps

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plural form of slag heap
slag heap
A man-made mound or heap formed with the waste material (slag) as a by-product of coal mining. Can also refer to the waste by-product from a foundry or furnace, formed into such a mound
slag heap
A slag heap is a hill made from waste material, such as rock and mud, left over from mining. a pile of waste materials at a mine or factory
slag heap
mound of residue of ore separated from a metal during the smelting process
slag heaps
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