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1992-08-12
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GB8913067D0
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1989-07-26
Multiple-set packer and method
GB2232724B
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1993-06-16
Noise reduction method
GB8924083D0
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1989-12-13
Rock drilling apparatus and method
GB2207502A
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1989-02-01
Method and pick-up for checking of hidden boundary coal-rock
GB9114000D0
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1991-08-14
Borehole water content logging system and method
EP0251165A3
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1988-09-28
Drilling means serving as ground anchor and method
BG46008A3
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1989-09-15
Method and installation for drilling openings in soft rocks in mines
PL270444A1
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1989-08-07
Method of and superssor for redusing noise level in positively ventilated mine workings
HU896405D0
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1991-07-29
Method and arrangement
ZA8864B
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1988-12-28
Low density mineral wool panel and method
PL293837A1
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1992-11-30
Yieldable support, method of making such yieldable support and method of supporting walls in particular in mines
PL273861A1
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1990-01-22
Method of and arrangement of workings for mining minerals
GB2152558B
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1986-12-17
Mining method and apparatus
BG45415A1
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1989-06-15
Method and installation for freafing of unferment tobacco
PL275480A2
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1989-06-26
Method and kit for reducing noise level
PL275270A1
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1990-04-17
Method of and arrangement of workings for filling dip-headings
PL240257A1
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1984-07-30
Method of protecting galleries and workings
GB2198205B
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1991-05-15
A dual stage dynamic rock stabilizing fixture and method of anchoring the fixture in rock formations
PL253990A2
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1986-04-22
Method of treating and locating in underground mine voids post-flotation wastes
GB2263992B
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1995-07-12
Noncorruptible read-writer and method
PL274728A1
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1990-03-19
Method of loosening floor rocks in underground mine workings and apparatus therefor
PL274266A1
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1990-02-19
Method of preventing endogenous fire occurence in caved abandoned workings
PL240880A1
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1984-09-10
Method of handling mine-run in mine workings of large inclination
IE891584L
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1989-11-18
Installation and method for processing mineral sealing¹materials