outside Yorkshire– it was obtained from an open cast pit in Northumbria, but is from the same formation as Yorkshire coal. Preserving the samples Some samples, such as the Millstone Grit, are very

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		outside Yorkshire– it was obtained from an open cast pit in Northumbria, but is from the same formation as Yorkshire coal. Preserving the samples Some samples, such as the Millstone Grit, are very Add to Reading List Source URL: www.ypsyork.org Download Document from Source Website File Size: 539,40 KB Share Document on Facebook