"The so-called coal mine Consolidation 3/4/9 is a mine founded by the industrialist Friedrich Grillo in the district of Gelsenkirchen Feldmark.The mine has been under monument protection since 1987.
The shaft was built 3/4/9 from 1871 with the construction of shaft 3 and was until 1876 as the largest in the Ruhr. Schacht 4 followed from 1893 to 1895 and in 1922 the central conveyor shaft with the number 9 was built, which was designed as a filigree steel truss construction made from riveted profile irons. Of the production shafts, which were built in this construction method, the shaft 9 is one of the last two preserved in North Rhine -Westphalia, since in the future mostly shaft scaffolds made of solid wall profiles were selected as the preferred construction method.
Below the hoistway is the so-called suspended bench, a raised shaft hall from a brick-framed steel frame construction. Another winding tower is located above the shaft and was built in 1958 out of concrete with external sheaves.
Right next to it is the former machine hall, which was converted in 2005 by TOR 5 Architekten into a music rehearsal center. In addition, both the northern and the southern engine house have been adapted for a new use. The southern engine house was built in 1923 to plans by Heinrich Ulrich von Bonin and is characterized by a flat gable roof and a façade made of clinker and concrete, which is divided by pilasters. Today, the building houses the Initiativkreis Mine Consolidation e.V.
The northern engine house from 1937 was built as a simple brick building with a flat roof according to designs by Hans Väth and is used for the presentation of the collection Werner Thiel. Another tower that characterizes the silhouette of the plant is the 40 meter high fan tower of the fan engine house, which was built in 1979 according to plans by WA Gorgen and is the only one of this type in the Ruhrgebiet. "Source: http: //www.baukunst -nrw.de/objekte/Zeche-Consolidation-349--3102.htm