Determination of the Energy Capacity of Face Rock Breaking by the Geokhod’s Knife Operating Element and its Dependence on the External Propeller’s PitchValery Nesterov, Vladimir Aksenov, Vladimir Sadovets, Dmitry Pashkov and Zhadyra BeysebayevaE3S Web Conf., 105 (2019) 03024DOI: https://doi.org/10.1051/e3sconf/201910503024