Finland
Profile: 

Geonex Oy is a manufacturer of DTH steel casing drilling machines (horizontal and vertical), and also provides services in training & consultation. Drilling method: often applied in hard ground and rock conditions; no drilling fluids; no soil deformation; no need for thrust block, target pit; no active steering (but accurate).

All conference papers from this company

Topic Presenter Conference
DTH steel casing drilling for pipeline construction in hard ground and rock conditions: technology and case examples Jouni Jokela Pipeline Technology Conference 2016