Small-diameter vertical shafts constructed in the shallow space of

Small-diameter vertical shafts constructed in the shallow space of steep mountainous areas - ScienceDirect

Tunnels and underground excavations, History, Methods, Uses, & Facts

4-Inch Auger Bit: Root Quencher Installation

Structure of the shaft sinking equipment with the shaft sinking

Various Types of Footings & its Application for Your House!

Actual vertical shaft constructions.

Procedure of setting and removing retaining wall.

Setting residual main rebar.

PDF) Vertical shaft machines. State of the art and vision

Synchronized jack system with three jacks.

Takashi HARA, Professor, Doctor of Engineering