GB2162565B
(en )
1988-01-27
Method for forming boreholes
HUT43879A
(en )
1987-12-28
Improved method for multi-stage recovering coal layer
PL253787A1
(en )
1986-09-23
Coal reclaiming method
OA07761A
(en )
1985-08-30
Method of recovering hydrocarbons from an underground formation.
HUT47167A
(en )
1989-01-30
Method for dewatering underground space particularly mine shaft
ZW12387A1
(en )
1987-09-30
Mining method
GB2109035B
(en )
1985-07-17
Mining method
PL268423A1
(en )
1989-05-02
Method of water desalting,especially coal mine water
HUT36223A
(en )
1985-08-28
Stripper, preferably for mining coal
PL276857A1
(en )
1990-07-09
Method for open-pit excavation of raw materials, especially from flooded deposits
PL277353A1
(en )
1989-09-18
Method of mining vein-type ore deposits of small thickness
GB2158854B
(en )
1987-09-16
Method of recovering hydrocarbons from an underground formation
PL262704A1
(en )
1988-06-23
Method for mining coal deposits having variable angles
AU627077B2
(en )
1992-08-13
Method for sealing mine workings
AU535081B2
(en )
1984-03-01
Slurry mining method
HU207875B
(en )
1993-06-28
Process for meliorating sand soils, first of all wind-blown sand
PL242314A1
(en )
1984-12-03
Method of recovering coal from post-flotation wastes
PL273529A1
(en )
1990-01-08
Method for producing perbenzyl coal derivatives
ZA874756B
(en )
1988-02-24
Mining method
PL268331A2
(en )
1988-12-22
Method for underground mining of useful deposits
BG44155A1
(en )
1988-10-14
Method for technical recultivating of embankments by explosive operations
PL262571A1
(en )
1988-09-01
A method for mining thick deposits
PL241733A2
(en )
1984-02-27
Method of mining a coal deposit
PL248099A1
(en )
1985-12-17
Method of mining deposits
SU1592489A1
(en )
1990-09-15
Method of open mining of mineral deposits