This publication provides a chronological overview of the Niederberg shaft and mining facility (Neukirchen-Vluyn, Germany) covering the period from 1911 to 1986. Helmut Berndt documents the technical development, construction and operation of the shaft and mining facilities, the changes over the decades, and their significance in the Lower Rhine mining complex. The book contains numerous illustrations (photographs, technical drawings) and serves as a detailed historical reference work on this mining facility.