2014DIN EN 16191:2014 Tunnelling machinery - Safety requirements; German version EN 16191:2014
2009DIN EN 815:2009 Safety of unshielded tunnel boring machines and rodless shaft boring machines for rock - Safety requirements; German version EN 815:1996+A2:2008
1996DIN EN 815:1996 Safety of tunnel boring machines without shields and rodless shaft boring machines for use in rock