PL317871A1
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1997-04-28
Apparatus for and method of continually mining coal
GB2281694B
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1997-11-12
Mounting apparatus for securing independent sections of a sectional sofa assembly
PL315589A1
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1996-11-12
Method of utilising waste coal
PL312566A1
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1996-04-29
Device for mining high beds
PL328755A1
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1999-03-29
Method of intensifying methane production from underground coal beds
PL328756A1
(en )
1999-03-29
Method of intensifying methane production from underground coal beds
GB2310873B
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2000-06-28
Removal of wellhead assemblies
PL314523A1
(en )
1996-09-16
Method of optimising mining patterns especially while mining coal beds
PL313740A1
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1996-07-22
Method of
PL305237A1
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1995-04-03
Method of obtaining 3-aminopyridines from 3-nitropyridines
PL300396A1
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1995-03-20
Method of isolating side portions of coal beds from adandoned workings
PL304757A1
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1996-03-04
Method of making coal briquettes
AU6905994A
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1995-01-17
Method of mining
PL321098A1
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1999-01-18
Method of mining coal beds
GB2319243B
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1998-10-14
Method of transporting coal
PL322788A1
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1999-04-26
Method of mining thick coal beds
PL308338A1
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1995-11-13
System for controlling advancing movement of coal mining equipment
PL311170A1
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1997-04-28
Method of getting residual coal from coal beds
PL322301A1
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1998-01-19
Method of getting coal in particular from thick coal beds
PL312051A3
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1997-06-23
Method of mining residual coal from coal beds in mines
PL302179A1
(en )
1995-08-21
Method of making accessible and mining inclined coal beds
PL292452A1
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1993-05-31
Method of mining medium thickness coal beds
PL313179A1
(en )
1997-09-15
Method of mining coal beds in layer-by-layer manner
PL298166A1
(en )
1993-09-06
Method of filling abandoned longwall workings
PL295559A2
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1993-05-17
Method of cavityless longwall coal mining