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THE DEVELOPMENT OF THE SHALE PLANER1 |
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| Authors: | C Forrest Tefft |
| Affiliation: | The Claycraft Mining and Brick Co. Columbus Ohio. |
| Abstract: | The development of the shale planer from the first machine built by J. M. Powell fourteen years ago to the latest type is traced. Examples of applications at various plants are cited. Actual operating cost data on some of the latest type machines are presented. The advantages of a shale planer over other gathering machinery are discussed. |
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