... highway, bridge tunnel, etc Geological Prospecting Drilling Rig GX-1TD Drilling Machine1. APPLICATIONS: Geological drilling for railroad, highway, bridge tunnel, ... drill hole, in order to hoist or lower the drilling tools. Hydraulic chuck, labor saving. Advanced design, multi-function, compact ... be equipped with mudpump, a variety kinds of drilling tools, A-derrick etc, for client choice. Technical ...