Consolidating composition for watercourse - bottom/slopes
DE1906342A1
Method and device for improving the strength properties of less permeable soils
DE1902720A1
Urea formaldehyde solns for sealing building - units
GB697375A
Improved process and apparatus for strengthening or sealing the ground for bore holes, sinking of mine shafts, for digging foundations and for other constructional work below ground level and for starting up drop filter wells
DE862110C
Process for the continuous transmission of measured values, in particular for the remote measurement of borehole data of all kinds
DE816834C
Method and device for telemetry of inclination and direction in boreholes
GB663446A
Method and machine for the production of boreholes extending horizontally and radially from a vertical shaft
DE879768C
Method and device for testing the water permeability of soil layers opened up by a borehole
