... of ground falls in mine workings which is based on their causes, i, e, the genetic classification of ground falls, Simultaneously, principal preventive means of several most frequently encpuntered types of ground falls are indicated. xpenx Ground Fall noaaep genetic classification peq xpenh...

... rock brust wird zerstorten gesteine Zerstorung Abb dargestellt kreis Gesteine kommt gebirgsmassiv Hangenden sind prevention ist dass metals & mining der Gesteine coal field werden der abb bausteine Abstract Rock bursts represent one of complex manifestations...