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1999-02-17
Apparatus and method for continuous mining
HUP9900314A2
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1999-05-28
Apparatus and method for continuous mining
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1996-12-18
Method and apparatus for supporting a mine roof
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1996-08-23
Apparatus and method for continuous mining
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1995-01-11
Method of activating a mine
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1999-02-17
Apparatus and method for continuous mining
PL306520A1
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1996-07-08
Longwall set for mining a stowed longwall and method of mining such longwall
AU6905994A
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1995-01-17
Method of mining
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1998-10-14
Method of transporting coal
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1995-07-24
Mining roof support and method of making same
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1996-12-18
Method and apparatus for supporting a mine roof
PL303891A1
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1995-12-27
Longwalll coal mining method
ZA939581B
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1994-08-11
Method of and apparatus for installing a mine prop
ZA939580B
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1994-08-11
Method of and apparatus for installing a mine prop
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1996-09-02
Method of protecting mine workings against methane accumulation
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1997-04-01
Side shield for mine workings
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1996-01-22
Method of locally demethanising the low-methane underground mine workings
PL298166A1
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1993-09-06
Method of filling abandoned longwall workings
PL54990Y1
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1997-03-28
Apparatus for tyreating and doing away mining bore-holes
PL300950A1
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1995-05-15
Method of mining coal and mining head therefor
ZA959646B
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1996-06-10
Method of an apparatus for mining underground
PL304560A1
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1996-02-05
Method of heaping up mine wastes
GB2309659B
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1998-10-07
Method of sealing a bore
PL295559A2
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1993-05-17
Method of cavityless longwall coal mining
PL317115A1
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1998-05-25
Method of mining a thin ore bed