| Patents for E21F 15 - Methods or devices for placing filling-up materials in underground workings (1,589) |
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| 07/02/1987 | DE3627048C1 Pneumatic stowing line with rotary drive discharge |
| 06/04/1987 | DE3541878A1 Pneumatic stowing line with front discharge |
| 05/27/1987 | DE3541712A1 Conveying pipe, in particular for pneumatic stowing in underground working |
| 05/21/1987 | DE3539474A1 Process for filling a space in a salt dome |
| 05/19/1987 | US4666346 Rotatable fill pipe with collapsible backfill elbow and method of employing same to blind-fill underground voids |
| 05/07/1987 | DE3539249A1 Horizontal stowing bunker for blasting in mining and tunnelling |
| 04/30/1987 | DE3538183A1 Waste water treatment plant |
| 04/29/1987 | CN85107683A Method for cutting off waters in natural and/or man-made underground cavity or tunnel with rock stuffing |
| 03/18/1987 | EP0214359A1 Posterior sealing employing mining techniques |
| 03/11/1987 | EP0213223A1 A method of mining the deposits with maintenance of permanent control of deformation of the surface, especially within the range of the influence of mining |
| 03/05/1987 | DE3531620A1 Pneumatic stowing installation for underground operation |
| 03/05/1987 | DE3529682A1 Process and device for producing dam and backfill concrete, in particular for underground mining |
| 02/10/1987 | US4641711 Using forming mud cement |
| 01/22/1987 | DE3524757A1 Conveying pipe |
| 01/02/1987 | DE3521867A1 Pneumatic stowing line with buttock discharge |
| 01/02/1987 | DE3521797A1 Pneumatic stowing line with buttock discharge |
| 11/12/1986 | CA1213739A Method of handling finely particulate waste materials for disposal |
| 10/28/1986 | CA1213211A1 Method for the underground gasification of coal or browncoal |
| 09/30/1986 | CA1212129A1 Method of making a building material |
| 06/18/1986 | EP0184720A1 Underground mining method for mineral deposits |
| 04/22/1986 | US4583784 Mining of minerals |
| 11/26/1985 | CA1197272A1 Cement compositions |
| 03/05/1985 | US4502539 An inclined coal layer |
| 02/26/1985 | US4501618 Slurrying calcium sulfate residue obtained from desulfurizing treatment of flyash-containing flue gas |
| 01/15/1985 | US4493593 Method and device for continuous transporting powdered, fine-grained and coarse-grained materials |
| 11/06/1984 | US4481037 Filling cavities in mines |
| 10/17/1984 | EP0121577A1 Method of dumping or disposing waste |
| 10/16/1984 | CA1176055A1 Polyimide ribbon and method for thermal printing |
| 10/02/1984 | CA1175248A1 Method for producing a structure having cohesion by means of a material comprising non-coherent solid particles |
| 09/12/1984 | EP0117922A1 Device for the conveying of grained goods ranging in size from dustlike to coarse, especially debris in underground mining |
| 08/28/1984 | US4468154 Method of disposal or temporary storage of waste material |
| 08/14/1984 | US4465401 Minimizing subsidence effects during production of coal in situ |
| 08/07/1984 | US4463807 Minimizing subsidence effects during production of coal in situ |
| 08/01/1984 | EP0114448A1 Improvements in or relating to settable foamed compositions |
| 05/15/1984 | US4448252 Minimizing subsidence effects during production of coal in situ |
| 05/01/1984 | US4445937 Pneumatic stowing of construction material comprising calcium alpha- and beta-sulphate hemihydrates |
| 04/10/1984 | US4441840 Mixing with recrystallized gypsum |
| 04/10/1984 | US4441554 Two interconnecting bore holes |
| 01/24/1984 | CA1161084A1 Method of disposal or temporary storage of waste material |
| 01/10/1984 | US4425057 Method of mining |
| 12/20/1983 | US4421429 Resistive substrate for thermal printing ribbons comprising a mixture of thermosetting polyimide, thermoplastic polyimide, and conductive particulate material |
| 12/06/1983 | US4419135 Method of preparing cementitious compositions for tunnel backfill |
| 11/16/1983 | EP0094331A1 Process for creating dams in mines from foamed plaster or anhydride, device for carrying out the process, and mixture utilised |
| 11/01/1983 | US4412760 Method for producing a structure having cohesion by means of a material comprising non-coherent solid particles |
| 09/27/1983 | US4406565 Slidable filling dam |
| 09/21/1983 | EP0089085A1 A method for the underground gasification of coal or browncoal |
| 09/20/1983 | US4405265 Method and apparatus for the continuous transfer of particulates from a liquid conveying medium to a gaseous conveying medium |
| 09/07/1983 | EP0087492A2 Method of recovering tailings resulting from ore processing |
| 08/16/1983 | CA1152114A1 Method of selective underground mining and stabilization of rock cavities |
| 07/05/1983 | US4391470 Method of, and apparatus for, winning mineral material |
| 06/29/1983 | EP0082270A1 Ribbon for non-impact thermal transfer printing and manufacturing method thereof |
| 03/22/1983 | US4377353 Method of selective underground mining and stabilization of rock cavities |
| 03/08/1983 | US4375985 Filling retorts |
| 02/01/1983 | CA1140329A1 Process for the removal and economic utilization of the residue from furnace waste-gas in conjunction with waste products |
| 01/11/1983 | CA1139322A1 Method of mining |
| 11/02/1982 | US4357167 Methods of stowing cavities with flowable materials |
| 09/29/1982 | EP0060902A1 A method of filling with simultaneous packing superficial storage yards with waste materials from power plants, thermal-electric power stations and heating plants |
| 07/20/1982 | US4340254 Method of mining heavy coal seams in two or more benches |
| 06/09/1982 | EP0053418A2 A method for the underground gasification of coal or browncoal |
| 04/20/1982 | CA1122232A1 Method of stabilizing aqueous fine coal slurry and product thereof |
| 01/05/1982 | US4309059 Mining method |
| 12/30/1981 | EP0042479A1 Goaf screen |
| 08/26/1981 | EP0034520A2 Mining excavating process using the bord and pillar method |
| 05/06/1981 | EP0028124A1 Method of mining |
| 04/08/1981 | EP0026301A2 Process for the removal or intermediate storage of wastes |
| 02/03/1981 | CA1095092A1 Mining method |
| 01/20/1981 | CA1093958A1 Method for underground gasification of coal |
| 01/07/1981 | EP0021180A1 Process for the elimination and economical usage of the residue produced by washing furnace exhaust gas in connection with waste products |
| 01/06/1981 | US4243101 Coal gasification method |
| 11/11/1980 | CA1089189A1 Disposal of the residue of the exhaust gas washers of furnaces in particular bituminous coal power stations |
| 06/17/1980 | US4208217 Portland cement |
| 05/06/1980 | CA1077068A1 Method of mine backfilling and material therefor |
| 03/06/1980 | WO1980000361A1 A method of selective underground mining and stabilization of rock cavities |
| 11/13/1979 | US4174135 Underground formed wall single-entry mining method |
| 08/07/1979 | US4163582 Pneumatic stowing apparatus |
| 01/30/1979 | US4136998 Process for the disposal of the residue of the exhaust gas washers of furnaces in particular bituminous coal power stations |
| 01/30/1979 | US4136524 Apparatus for sealing access holes to cavities within the earth with rock glass |
| 01/09/1979 | US4133580 Isolation of in situ oil shale retorts |
| 07/18/1978 | US4101333 Slurry of mill tailings and water |
| 06/27/1978 | US4096940 Conveying apparatus |
| 02/07/1978 | US4072018 Tunnel support structure and method |
| 01/24/1978 | US4069676 Mine packing equipment |
| 11/29/1977 | US4059963 Method of mine backfilling and material therefor |
| 11/08/1977 | US4056939 Inflatable envelope systems for use in excavations |
| 08/30/1977 | US4044563 Subsidence control |
| 04/26/1977 | US4019327 Mining |
| 01/04/1977 | US4000621 Remote sealing of mine passages containing flowing water |
| 03/16/1976 | US3943723 Mine roof support equipment |
| 02/10/1976 | US3937025 Inflatable envelope systems for use in excavations |