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ore mining rubble

Alternative Title:rubble ore. Learn about this topic in these articles:mining. In iron processing: Lumps and fines. As-mined ironorecontains lumps of varying size, the biggest being more than 1 metre (40 inches) across and the smallest about 1 millimetre (0.04 inch). The blast furnace, however, requires lumps between 7 and 25 millimetres ...

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