1.
An underground conveyor !
On conveyors like the one in this photo the raw coal is transported underground. Also the miners use them quite frequently to get from one place to another.
2.
A pit phone !
Even if this telephone in the picture looks quite old-fashioned, it is connected to all important places and institutions like the pit bank and the sixth ...
3.
Niederberg colliery !
The Niederberg colliery ! Niederberg colliery ! Once again the Niederberg colliery ! Special thanks to Robert Dietz and Uwe Kluge for sending me these photos.
4.
5.
6.
7.
8.
9.
10.
