ZA849431B
(en )
1985-07-31
Mobile mining machine and method
PL241732A2
(en )
1984-03-12
Method of actively extingushing fire in particular in mine workings
PL250422A1
(en )
1985-08-13
Method of operation of open-flame tunnel kiln and open-flame tunnel kiln
GB2134630B
(en )
1986-10-15
Apparatus and method of blasting rocks
GB2152558B
(en )
1986-12-17
Mining method and apparatus
PL240880A1
(en )
1984-09-10
Method of handling mine-run in mine workings of large inclination
PL240257A1
(en )
1984-07-30
Method of protecting galleries and workings
HUT36760A
(en )
1985-10-28
New explosives and method for making thereof
PL252749A1
(en )
1986-10-07
Method of reducing fire risks in underground headings or workings
PL248564A1
(en )
1986-01-14
Method of providing fire-safe zones in underground mine workings
ZA84302B
(en )
1984-08-29
Support of hanging walls in mine workings
ZA846395B
(en )
1985-07-31
Method of blasting
PL245257A2
(en )
1984-10-22
Method of protection of mine dog headings and tunnels
PL248056A2
(en )
1985-04-09
Method of filling mined out workings in mines
PL237737A1
(en )
1984-02-13
Method of propping longwall-type workings
ZA841429B
(en )
1984-11-28
Continuous mining method and means therefor
PL127741B2
(en )
1983-11-30
Method of rebuilding clamped corridor-type mine workings
PL237807A2
(en )
1983-06-20
Method of preventing crumps in underground mines
PL241751A1
(en )
1984-11-08
Method of solubilization of coal
PL241601A2
(en )
1984-02-27
Method of limiting displacements of rocks in mine workings from beneath of rocks and clamping the lining of such workings
PL265650A1
(en )
1988-11-24
Method of placing smoke-box dusts in mine workings
PL240529A1
(en )
1984-08-13
Method of providing false timbering for longwall cross-cuts
PL241343A2
(en )
1984-02-13
Apparatus for putting in place rounds of coal
PL252637A1
(en )
1986-10-07
Method of forecasing risks of crumps in particular in coal mines
PL255481A1
(en )
1987-04-21
Method of ventilating mine workings and apparatus therefor