A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A rock bolt has a rectangular blade, which can pierce and shred a flexible housing, extending from cross-shaped mixing formations at one end of an elongate rod.
A rock bolt has a rectangular blade, which can pierce and shred a flexible housing, extending from cross-shaped mixing formations at one end of an elongate rod.
ROCK BOLT
NISSEN CHRISTIAN (author)
2015-08-20
Patent
Electronic Resource
English