GB8701249D0
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1987-02-25
Mine haulage method
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1989-05-16
Apparatus for mechanized mining of minerals in particular coal
PL273861A1
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1990-01-22
Method of and arrangement of workings for mining minerals
GB8628125D0
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1986-12-31
Reducing ignition risk in mine workings
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1987-10-05
Method of mining steep seams of minerals,in particular those of coal and apparatus therefor
PL282590A1
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1991-06-03
Method of mining useful minerals
PL268154A1
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1989-04-17
Method of and system for sealing mine workings
PL266955A1
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1989-01-23
Method of mining rocky massives in mine workings
PL257853A1
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1988-02-04
Method of mining useful minerals through bore-holes and apparatus therefor
PL275270A1
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1990-04-17
Method of and arrangement of workings for filling dip-headings
PL288001A1
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1991-06-03
Method of mining useful minerals
PL248564A1
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1986-01-14
Method of providing fire-safe zones in underground mine workings
PL274728A1
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1990-03-19
Method of loosening floor rocks in underground mine workings and apparatus therefor
PL261069A1
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1987-07-27
Method of mining thick beds of minerals
PL280032A1
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1990-02-05
Method of mining low thickness seams of useful minerals
ZA87381B
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1987-12-30
Mine haulage method and apparatus
BG40593A1
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1987-01-15
Method for underground stoping of oreless minerals
BG46104A1
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1989-10-16
Method for opencast mining of horizontaly and inclinly tighting mineral resources
PL267849A3
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1989-05-16
Method of and apparatus for arresting mining cras in inclined mine workings
SU1592496A1
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1990-09-15
Method of mining ore deposits
PL138068B2
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1986-08-30
Method of and apparatus for filling underground mine workings
HUT45752A
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1988-08-29
Method and apparatus for mining coal beds
PL282575A1
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1991-06-03
Method of and apparatus for dewatering underground mine workings
PL294966A1
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1993-12-27
Method of and apparatus for placing coal mine waste rock into abandoned workings
PL247451A1
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1985-11-05
Method of and head for mining rocky minerals