[4] Only half a year after completion of the line from Kray to Gelsenkirchen, on 18 September 1872, the RhE opened a siding to the Wilhelmine Victoria colliery in the district of Hessler, together with Schalke RhE station.

[9] Since this crossed the important Cologne-Minden main line on the level west of Gelsenkirchen, the station and siding were closed at the end of the 1880s following the nationalisation of the railways, after less than twenty years of operation.

[10] The siding from Gelsenkirchen was upgraded to a regular freight line and a connection was opened to Hessler station on the BME Emscher Valley Railway on 1 April 1897.

[11] On 12 September 1903, freight traffic was resumed on the original line between Rotthausen and Schalke Süd stations.

Freight traffic on the line was abandoned on 28 May 1967 and the section was closed completely on 1 June 1969.

[15] Since 16 July 1914, the line has been fully duplicated from Essen Hauptbahnhof to Kray Nord.

The two sections were combined to make a main line between two major stations.

[8] Between 1972 and 1974, the line was realigned from the eastern end of Essen Hauptbahnhof as part of the redevelopment for the Rhine-Ruhr S-Bahn, its connection to the line via Stoppenberg to Gelsenkirchen-Bismarck, which had been abandoned in 1970, was removed and connections were built to Essen-Kray via a flying junction to the two S-Bahn tracks on the south side of the station, as well as to the terminating tracks on the north side of the station.