Controlled thrust and torque placement of mechanical anchor bolts and their relationship to improved roof control

Autor: C.J.H. Brest Van Kempen, J.P. Conway, A. Mahyera
Rok vydání: 1983
Předmět:
Zdroj: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. 20:A27
ISSN: 0148-9062
Databáze: OpenAIRE