GB8630765D0
(en )
1987-02-04
Shield tunnelling method
ZW12387A1
(en )
1987-09-30
Mining method
GB8701249D0
(en )
1987-02-25
Mine haulage method
GB8618092D0
(en )
1986-09-03
Lining of tunnels
GB8703535D0
(en )
1987-03-25
Supporting underground workings
BG41250A1
(en )
1987-05-15
Combined supporting for fixing of underground stopes and method for its elaborating
GB2193522B
(en )
1989-12-20
Support unit for underground coalface support structure
PL267422A1
(en )
1988-06-09
Shape for mine and tunnel lining
CS198586A2
(en )
1989-11-14
Section of support's face mechanization for longwall method
GB2197679B
(en )
1990-02-14
Mine roof support assemblies
AU7629787A
(en )
1988-02-11
Measuring advance of mine roof support
BG47295A1
(en )
1990-06-15
Method and device for making of underground stopes
GB2091315B
(en )
1984-09-05
Method of supporting rock strata and support means for use therein
GB2141159B
(en )
1986-09-17
Device for connecting adjacent segments of tunnel-wall support arches in underground tunnels
HU205199B
(en )
1992-03-30
Method and structure for supporting underground hole particularly mine drift
PL253515A1
(en )
1986-12-02
Method of lining of longwalls and section of self-advancing supports for longwalls
CS741986A3
(en )
1992-09-16
Securing of excavations
ZA874756B
(en )
1988-02-24
Mining method
ZA867421B
(en )
1987-05-27
Mining support pillars
HUT45107A
(en )
1988-05-30
Method and structure for supporting earth walls
ZA876462B
(en )
1989-04-26
Mining support
ZA871090B
(en )
1987-09-30
Backfilling of mine workings
GB8614316D0
(en )
1986-07-16
Structure for tunnels
HUT45579A
(en )
1988-07-28
Mine support
BG43125A1
(en )
1988-04-15
Lining panel and method for its fixing