GB2212199B
(en )
1991-07-31
Method of steering the working front in underground mine workings
GB8334290D0
(en )
1984-02-01
Making boreholes in underground mine workings
GB2142959B
(en )
1986-04-16
A method in the excavation of underground caverns in rock
PL291602A2
(en )
1992-06-15
Method of placing flying dusts in voids of mined out underground mine working caving rubble
HUT61381A
(en )
1992-12-28
Supporting unit suitable for building underground holes, mine, tunnel and similar
EP0383362A3
(en )
1990-09-05
Method for backfilling underground excavations, in particular in coal mines
ZA892022B
(en )
1989-11-29
Method of evacuating mineral-containing rock mined in longwall-face underground mining,and transportation apparatus to carry out the method
PL271020A1
(en )
1989-09-04
System for cooling air in underground mine workings
GB2218197B
(en )
1992-01-02
Pressure cabin for use in underground mining & tunnelling
GB2217752B
(en )
1992-05-06
A method for safeguarding the face cutting length in underground mine workings and a roadway support arch adapted for the method
PL289020A1
(en )
1991-09-09
Method of eliminating crump hazards in irregular rocky formations in the region of workings of underground ore mines
GB2233999B
(en )
1993-07-07
An apparatus for making galleries or the like in underground mining operations or the like
PL306749A1
(en )
1995-06-12
Method of carrying on mining work in underground mines within areas featured by extremely difficult geological and mining conditions
PL272961A1
(en )
1989-12-11
Method of filling underground voids in particular abandoned mine workings
PL317590A1
(en )
1998-06-22
Method of locating flying dusts in voids of goafs of abandoned caved workings of underground mines
SU1546641A1
(en )
1990-02-28
Apparatus for drilling and excavating materials from underground formations
PL291676A1
(en )
1993-03-22
Portable boring jig for use in underground mine workings
CS9000038A2
(en )
1991-07-16
Drilling equipment especially for underground mines
PL292395A1
(en )
1993-05-17
Method of liquidating mine workings situated within a mining field of exploitation front
PL297544A1
(en )
1994-08-08
Method of placing polluted water into abandoned underground mine workings
PL298166A1
(en )
1993-09-06
Method of filling abandoned longwall workings
PL266955A1
(en )
1989-01-23
Method of mining rocky massives in mine workings
SU1592485A1
(en )
1990-09-15
Method of selective excavation of mineral strata
PL292685A1
(en )
1993-06-14
Method of mining useful minerals through bore-holes
PL101196U1
(en )
1996-03-18
Apparatus for demethansing mine workings in underground mines