BergbaumuseumBochum-2003-12-04-00102 BergbaumuseumBochum-2003-12-04-00104 BergbaumuseumBochum-2003-12-04-00105 BergbaumuseumBochum-2003-12-04-00106 BergbaumuseumBochum-2003-12-04-00109 BergbaumuseumBochum-2003-12-04-00110
BergbaumuseumBochum-2003-12-09-00050 BergbaumuseumBochum-2003-12-09-00050SW