(under subclass 317) Apparatus including a device for emitting a high-velocity gas or liquid stream for loosening, disintegrating, and eroding material surrounding the suction pipe to facilitate removal by suction. [figure] [caption]A - Digging teeth; B - Fluid jet digger; C - Suction head
SEE OR SEARCH CLASS
175, Boring or Penetrating the Earth,
67, for method of using a stream of pressurized fluid to dislodge the earth formation.
299, Mining or In Situ Disintegration of Hard Material,
16+, for process wherein a source of fluid at above atmospheric pressure is applied directly to material to mine or disintegrate the material.
405, Hydraulic and Earth Engineering, 163, for subject matter relating to bottom fluidizing means wherein an initially relatively firm bottom material which supports the pre-positioned string or conduit is caused to assume a flowable state.
