EP0191162A3
(en )
1989-03-08
Method of software protection
DE3566860D1
(en )
1989-01-26
Stuffing apparatus and stuffing method
DE3573059D1
(en )
1989-10-26
Stuffing apparatus and method
DE3468472D1
(en )
1988-02-11
Safe arrangement and method of operating it
DE3473383D1
(en )
1988-09-15
Self protected thyristor and method of making
ZA837482B
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1985-02-27
Method and apparatus for fracturing of rock
GB2185093B
(en )
1988-09-14
Demolition device and method of preparing same
PL240257A1
(en )
1984-07-30
Method of protecting galleries and workings
GB2192920B
(en )
1990-01-17
Method of excavation and apparatus therefor
PL250422A1
(en )
1985-08-13
Method of operation of open-flame tunnel kiln and open-flame tunnel kiln
GB8400286D0
(en )
1984-02-08
Sealing of casings
GB2152558B
(en )
1986-12-17
Mining method and apparatus
PL255481A1
(en )
1987-04-21
Method of ventilating mine workings and apparatus therefor
PL237737A1
(en )
1984-02-13
Method of propping longwall-type workings
GB2136851B
(en )
1986-05-29
Apparatus and methods of ground drilling
PL245257A2
(en )
1984-10-22
Method of protection of mine dog headings and tunnels
PL268154A1
(en )
1989-04-17
Method of and system for sealing mine workings
PL241732A2
(en )
1984-03-12
Method of actively extingushing fire in particular in mine workings
PL251622A1
(en )
1986-07-29
Method of protecting floor rock against upheval and apparatus therefor
PL252413A1
(en )
1986-01-28
Method of protecting miners in crump endangered workings
PL275270A1
(en )
1990-04-17
Method of and arrangement of workings for filling dip-headings
HUT36760A
(en )
1985-10-28
New explosives and method for making thereof
BG47295A1
(en )
1990-06-15
Method and device for making of underground stopes
PL246854A1
(en )
1985-11-05
Method of and apparatus for protecting work area and exit of longwall workings
PL240880A1
(en )
1984-09-10
Method of handling mine-run in mine workings of large inclination