GB2161847B
(en )
1987-08-12
Coal seam fracing method
PL253788A1
(en )
1986-07-29
Method of reclaiming minerals
GB2161521B
(en )
1987-11-25
A process and device for sinking wells
DE3561963D1
(en )
1988-04-28
Azimuth-measuring method for inclined boreholes
GB2159836B
(en )
1988-02-24
Copper-nickel-tin-titanium-alloy and a method for its manufacture
DE3460179D1
(en )
1986-07-10
A method of excavating underground caverns in rock
PL246623A2
(en )
1985-01-16
Method of reducing a risk of crumps in underground mines
GB8628125D0
(en )
1986-12-31
Reducing ignition risk in mine workings
GB2152558B
(en )
1986-12-17
Mining method and apparatus
PL256103A1
(en )
1987-07-27
Hydraulic mining method and apparatus
PL247539A1
(en )
1985-12-17
Method of mining coal in a longwall system
PL237807A2
(en )
1983-06-20
Method of preventing crumps in underground mines
PL248056A2
(en )
1985-04-09
Method of filling mined out workings in mines
ZA855345B
(en )
1987-09-30
Mining and reclamation methods
PL252637A1
(en )
1986-10-07
Method of forecasing risks of crumps in particular in coal mines
ZA881120B
(en )
1988-10-26
Method of waterproofing in a mine
PL248564A1
(en )
1986-01-14
Method of providing fire-safe zones in underground mine workings
ZA842729B
(en )
1984-11-28
A method of dressing ore
ZA84436B
(en )
1986-03-26
Lightweight brattice for use in underground mines
PL247590A1
(en )
1985-11-19
Longwall working roof-support,in particular for a working with filling and method of driving such working
PL246063A1
(en )
1985-08-13
Mine winning loader and method of its movement
PL252355A1
(en )
1985-12-03
Underground coal mining method
PL249361A2
(en )
1985-08-27
Method of obtaining aggregate and brekstone in an underground mine
PL243739A2
(en )
1984-07-30
Method of mining a body of coal
AU566519B2
(en )
1987-10-22
Mining method