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Excerpt from The Methods of the United States Steel Corporation: For the Commercial Sampling and Analysis of Coal, Coke and by-ProductsMost coals occur in horizontal layers and also in vertical laminations, and; when coal is being mined so that the face of the laminations is exposed, it is described as being on the face; when exposing the ends, it is described as being on

Title : The Methods of the United States Steel Corporation: For the Commercial Sampling and Analysis of Coal, Coke and By-Products (Classic Reprint)
Author : United States Steel Corporation
Language : en
Rating :
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Type : PDF, ePub, Kindle
Uploaded : Apr 11, 2021

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