| DE184369C (en)* | | | | |
| GB804773A (en)* | 1955-11-04 | 1958-11-19 | Proprietors Of Hay S Wharf Ltd | Apparatus for disintegrating earth, mud or the like |
| SU854803A1 (en)* | 1978-05-24 | 1981-08-15 | За витель | Ship for conducting bottom-excavating work |
| DE2913455A1 (en)* | 1979-04-04 | 1980-10-16 | Guenter Ing Grad Kupczik | Underwater earth removal appliance - uses pressurised water jet surrounded by pressurised air, to reduce friction |
| DE2930745A1 (en)* | 1979-07-28 | 1981-02-19 | Dhv Raadgevend Ing | Self-propelled river dredger - has mouthpiece type suction pipe connected to pump on board, outlet pipe with mouthpiece having remote controlled adjustable valve |
| US4896445A (en)* | 1980-12-30 | 1990-01-30 | Deal Troy M | Method for reducing costs and environmental impact of dredging |
| NL8104293A (en)* | 1981-09-17 | 1983-04-18 | Ihc Holland Nv | Method for vacuuming soil or sludge with a suction extractor as well as a suction extractor for applying the method. |
| DE3704003A1 (en)* | 1987-02-10 | 1988-08-18 | Meyer Poppe & Van Der Kamp Gmb | METHOD AND DEVICE FOR REMOVING SLUDGE DEPOSITS FROM HARBOR BASIN OR THE LIKE |
| US4819347A (en)* | 1988-01-19 | 1989-04-11 | Riedel International, Inc. | System for removing submerged sandwaves |
| DE3923113A1 (en)* | 1989-07-13 | 1991-01-24 | Telefunken Systemtechnik | Arrangement for cleaning sea beds contaminated by pumpable material - has underwater vehicle with stirring system and pump in underside hopper |
| DE3932779A1 (en)* | 1989-09-30 | 1991-04-11 | Schering Ag | METHOD FOR TREATING OBJECTS WITH A LIQUID, AND APPARATUS FOR CARRYING OUT THE METHOD |