GB2070880B
(en )
1983-12-14
Surveying vehicle and a method for surveying the longitudinal profile of tunnels
GB2135450B
(en )
1985-10-16
Borehole survey method
DE3665730D1
(en )
1989-10-26
Method for the consolidation of geological formations
PL261362A1
(en )
1987-08-10
Method of consolidating earth formations
DE3561963D1
(en )
1988-04-28
Azimuth-measuring method for inclined boreholes
ZW12387A1
(en )
1987-09-30
Mining method
GB8701249D0
(en )
1987-02-25
Mine haulage method
AU2601388A
(en )
1989-05-23
Method and system for mine sweeping
PL264419A3
(en )
1988-10-13
Method of construction of an underground pedestrian tunnel
GB8529491D0
(en )
1986-01-08
Surveying method
JPS57158498A
(en )
1982-09-30
Method of waterproof construction of tunnel
GB2219399B
(en )
1991-10-09
Surveying method
GB8500672D0
(en )
1985-02-13
Mining method & apparatus
JPS57180796A
(en )
1982-11-06
Construction of underground tunnel
JPS56119096A
(en )
1981-09-18
Method of excavating tunnel
JPS5768496A
(en )
1982-04-26
Tunnel excavation method
SU1488508A1
(en )
1989-06-23
Method of consolidating rock
SU1488502A1
(en )
1989-06-23
Method of consolidating rock
GB2165211B
(en )
1988-08-24
Mine roadway apparatus
GB2095717B
(en )
1984-10-24
Positioning mine roadway supports
ZA874756B
(en )
1988-02-24
Mining method
PL268488A2
(en )
1988-08-18
The method of the underground exploitation of resources
HU896420D0
(en )
1990-03-28
New method for tunnel building
IT1220284B
(en )
1990-06-15
PROCEDURE FOR THE CREATION OF UNDERGROUND TUNNELS
PL281912A1
(en )
1991-04-22
Method of obtaining mining explosives