Method of detecting and evaluating work data or travel data
JPS5490816A
Method and device for making slit in stratum
DE2363029A1
Shaker for earth compression and borehole prodn. - has horizontal-action rotary rocker coupled to shaker body
ES403891A1
Hydraulic repeating hammer
ES396602A1
A procedure to establish traction anchors in the field with strips protected against corrosión. (Machine-translation by Google Translate, not legally binding)
ES396603A1
A procedure to build anchorages for land. (Machine-translation by Google Translate, not legally binding)
NL166299B
Deep vibration device for compacting the ground and for making drilling holes in the ground.
DE1558963A1
Rotary drilling device with deep pump
US3491497A
Earth anchor and method of forming same
GB1137851A
Improvements in and relating to tie anchors in the earth