EP0289623A4
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1990-09-26
Radar-type underground prospecting apparatus
GB8722604D0
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1987-11-04
Distinguishing clay in earth formations
IL66073A0
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1982-09-30
Improvements in earth drilling devices and method
GB8924083D0
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1989-12-13
Rock drilling apparatus and method
GB8701249D0
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1987-02-25
Mine haulage method
ZA867540B
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1987-05-27
A method of and a device for guiding a wire in the wire bolting of a rock
EP0393197A4
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1991-01-02
Method of forming underground passage and tunnel excavator
GB2186607B
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1990-03-28
Supporting underground workings
PL263099A1
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1988-09-01
Method and device for suspending leads in underground mining excavations
GB2104573B
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1985-02-06
Improvements in cutting devices for mining and tunnelling machines
ZA863016B
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1986-12-30
Mining shovel ballast box connection method and apparatus
GB8404816D0
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1984-03-28
Anchorage in rock formations
PL261336A1
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1988-06-09
Method and device for sealing in underground mines
GB8511145D0
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1985-06-12
Device for use in underground mining
GB2152558B
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1986-12-17
Mining method and apparatus
PL267395A1
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1989-03-06
Method and device for backfilling mining excavations
AR243259A1
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1993-07-30
Device and method for making a gap in the face of an underground excavation.
ZA872544B
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1987-11-25
Safety device and method for underground mining
GB2233999B
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1993-07-07
An apparatus for making galleries or the like in underground mining operations or the like
BG47295A1
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1990-06-15
Method and device for making of underground stopes
PL269501A1
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1989-05-02
Method of blowing of fly-ash for filling in underground works and device for that method application
ZA857760B
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1986-05-28
Method of timing,and timing device for use in underground mining operation
PL271776A1
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1989-10-16
Control and interlock system for an underground demetanizing station used in deep mines
ZA87381B
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1987-12-30
Mine haulage method and apparatus
PL261280A1
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1987-03-23
Method of filling worked-out voids in underground mines