GB2212199B
(en )
1991-07-31
Method of steering the working front in underground mine workings
GB2039971B
(en )
1983-03-30
Method of selective underground mining and stabilization of rock cavities
AU576567B2
(en )
1988-09-01
Refilling voids in underground mine workings
DE3565707D1
(en )
1988-11-24
Compositions and methods for reducing the permeability of underground strata
ZA816000B
(en )
1982-08-25
Continuous gallery construction,in particular for underground mine tunnels
GB8334290D0
(en )
1984-02-01
Making boreholes in underground mine workings
PL140323B2
(en )
1987-04-30
Method of reducing fire hazard in underground mine workings with simultaneous speeding up of roof rock reconsolidation
PL250634A1
(en )
1985-07-30
Apparatus for placing units of self-advancing hydraulic roof supports in underground mine workings in particular longwall workings
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
GB8404816D0
(en )
1984-03-28
Anchorage in rock formations
ZA85238B
(en )
1985-09-25
Improvements in mobile support assemblies for underground mine workings
PL253270A1
(en )
1986-11-18
Method of detecting crump hazard conditions in underground mine workings
PL266955A1
(en )
1989-01-23
Method of mining rocky massives in mine workings
PL248056A2
(en )
1985-04-09
Method of filling mined out workings in mines
PL267849A3
(en )
1989-05-16
Method of and apparatus for arresting mining cras in inclined mine workings
PL252749A1
(en )
1986-10-07
Method of reducing fire risks in underground headings or workings
BG36876A1
(en )
1985-02-15
Method for non- explosive piercing of mine stopings and underground output of rock lining materials
PL249361A2
(en )
1985-08-27
Method of obtaining aggregate and brekstone in an underground mine
PL242360A1
(en )
1984-12-17
Method of protecting underground dog headings in particular longwall extraction galleries
PL241732A2
(en )
1984-03-12
Method of actively extingushing fire in particular in mine workings
PL284461A1
(en )
1991-10-07
Method of supporting roofs in longwall mine workings
PL249715A2
(en )
1985-07-30
Method of and apparatus for filling underground mine workings
PL251521A1
(en )
1986-07-15
Method of indicating and recording presence of workers at predetermined places in underground mine workings
PL245257A2
(en )
1984-10-22
Method of protection of mine dog headings and tunnels
PL241216A1
(en )
1984-10-08
Method of protection of roof of longwalls operated with hydraulic filling and mechanized mine lining therefor