Safety of unshielded tunnel boring machines and rodless shaft boring machines for rock - Safety requirements
NORM herausgegeben am 1.3.2009
Designation standards: ČSN EN 815+A2
Classification mark: 277993
Catalog number: 82940
Note: UNGÜLTIG
Publication date standards: 1.3.2009
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: Czech technical standard
Kategorie: Technische Normen ČSN