PL312567A1
(en )
1996-04-29
Longwall mining device
PL306053A1
(en )
1995-06-12
Air conditioning system for underground mine workings
PL299417A1
(en )
1993-12-27
Haulage apparatus for underground galleries
PL323324A1
(en )
1998-06-08
Short-wall mining machine for underground coal mines
ZA982843B
(en )
1998-10-08
Winning apparatus for underground ore mining operations
PL56123Y1
(en )
1998-05-29
Apparatus for demethansing mine workings in underground mines
PL271020A1
(en )
1989-09-04
System for cooling air in underground mine workings
PL306745A1
(en )
1995-07-24
Underground mining planer
PL302173A1
(en )
1995-08-21
Portable miner's rescue apparatus changing chamber for underground mines
GB2233999B
(en )
1993-07-07
An apparatus for making galleries or the like in underground mining operations or the like
PL341779A1
(en )
2001-02-12
Supporting and guiding system for mining conveyors and/or machines used in underground mine workings
PL313182A1
(en )
1997-09-15
Overhauling apparatus for mine workings
PL313181A1
(en )
1997-09-15
Overhauling apparatus for mine workings
PL317845A1
(en )
1997-07-21
Mining conveyor for an underground coal mine
PL306602A1
(en )
1996-07-08
System for sorting the gotten especially in underground mine workings
PL304260A1
(en )
1996-01-22
Method of locally demethanising the low-methane underground mine workings
HU9502262D0
(en )
1995-09-28
Apparatus for the linking of guard elements in an underground cave mainly in mines
PL306352A1
(en )
1996-06-24
Floor-mounted reloading station for underground mine workings
PL310642A1
(en )
1997-04-01
Side shield for mine workings
PL303891A1
(en )
1995-12-27
Longwalll coal mining method
PL305372A1
(en )
1996-04-15
System for continually moving overhung machinery and equipment in underground mine workings
PL304306A1
(en )
1996-01-22
Apparatus for continuously moving heavy-duty machinery and equipment in underground mine workings
ZA949176B
(en )
1995-07-27
Rock support apparatus for underground excavations
PL324682A1
(en )
1999-08-16
Apparatus for identifying a place where miners working in underground parts of a mine are currently present
PL291676A1
(en )
1993-03-22
Portable boring jig for use in underground mine workings