Testing of shearing machines in shale mines

Abstract

At present the industry of the Soviet Union mass-produces only Ural-33 type shearing machines, which are used in those mines where it is impossible to use combines. With the existing technology of oil shale mining, the undercutting is made at the floor of the seam (on the third layer of oil shale) by the “Ural-33” machine with a two-meter bar, with a useful cutting depth of 1.9 m ...

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