ZA884509B
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1989-03-29
Diamond tools for rock drilling and machining
ZA849431B
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1985-07-31
Mobile mining machine and method
GB8829827D0
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1989-02-15
Method of steering the working front in underground mine wrkings
EP0422435A3
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1991-06-26
Diamond compacts for rock drilling and machining
PL304798A1
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1995-03-06
Mining apparatus and method of mining in underground mines
GB8912393D0
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1989-07-12
A method of and an arrangement for drilling a hold in a rock
DE3565707D1
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1988-11-24
Compositions and methods for reducing the permeability of underground strata
EP0393197A4
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1991-01-02
Method of forming underground passage and tunnel excavator
GB9023125D0
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1990-12-05
Improvements in cutter bit assemblies and arrangements for use with mining or tunnelling machines
GB9018257D0
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1990-10-03
Method and tool for seabed excavation
PL281430A1
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1991-03-25
Method and insert for improving comfort of work in underground mining excavations
GB2164687B
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1987-11-18
Improvements in machines for use in mining or tunnelling
PL255463A1
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1987-10-05
Method of mining steep seams of minerals,in particular those of coal and apparatus therefor
GB8904869D0
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1989-04-12
Improvements in or relating to mining machines and methods
PL263099A1
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1988-09-01
Method and device for suspending leads in underground mining excavations
PL273861A1
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1990-01-22
Method of and arrangement of workings for mining minerals
PL272185A1
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1988-11-24
Method of hydromechanically backfilling post-exploitation areas in particular those involing sulfur mining through bore-holes
PL280032A1
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1990-02-05
Method of mining low thickness seams of useful minerals
PL136058B2
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1986-01-31
Method of reducing a risk of crumps in underground mines
PL266955A1
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1989-01-23
Method of mining rocky massives in mine workings
PL248564A1
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1986-01-14
Method of providing fire-safe zones in underground mine workings
PL249361A2
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1985-08-27
Method of obtaining aggregate and brekstone in an underground mine
PL306749A1
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1995-06-12
Method of carrying on mining work in underground mines within areas featured by extremely difficult geological and mining conditions
GB2233999B
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1993-07-07
An apparatus for making galleries or the like in underground mining operations or the like
PL271776A1
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1989-10-16
Control and interlock system for an underground demetanizing station used in deep mines