Synonyms were used for: Steinkohlenbergbau
Search without synonyms: keywords:("Steinkohlenbergbau")
Used synonyms:
- coal mines and mining
- hard coal mining
- steinkohlebergbau
- steinkohlenabbau
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Surface factors affecting pillar recovery
Engineering Index Backfile | 1949|Keywords: Coal mines and mining -
Tests on ignition of natural gas-air mixtures by permissible explosives in experimental coal mine
Engineering Index Backfile | 1949|Keywords: Coal mines and mining -
Tests in experimental coal mine to determine requirements for preventing propagation of coal-dust explosions in rooms
Engineering Index Backfile | 1948|Keywords: Coal mines and mining -
What roof conditions permit pillar recovery
Engineering Index Backfile | 1947|Keywords: Coal mines and mining -
Mine roof sealing to prevent slate falls
Engineering Index Backfile | 1944|Keywords: Coal mines and mining -
Studies of roof movement in coal mines -- 4, study of subsidence of highway caused by mininfi coal beneath
Engineering Index Backfile | 1941|Keywords: Coal mines and mining -
Progress report: experiments on strength of small pillars of coal in Pittsburgh bed
Engineering Index Backfile | 1941|Keywords: Coal mines and mining -
Effect of changes in moisture and temperature on mine roof -- I. First report on strata overlying Pittsburgh coal bed
Engineering Index Backfile | 1941|Keywords: Coal mines and mining -
Prevention of coal dust explosions in mines
Engineering Index Backfile | 1941|Keywords: Coal mines and mining -
Experiments on strength of small pillars of coal in Pittsburgh bed
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Use of wetting agents for allaying coal dust in mines
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Methods of sampling and analyzing coal-mine dusts for incombustible content
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Studies of roof movement in coal mines -- III, Gibson Mine of Hillman Coal and Coke Co
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Tests of salt as substitute for rock dust in prevention of coal-dust explosions in mines
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Tests of salt as substitute for rock dust in prevention of coal-dust explosions in mines
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Recent trends in rock dusting to prevent dust explosions in coal mines
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Methods of sampling and analyzing coal-mine dusts for incombustible content
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Methods of sampling and analyzing coal-mine dusts for incombustible content
Engineering Index Backfile | 1940|Keywords: Coal mines and mining -
Studies of roof movement in coal mines -- II, crucible mine of crucible fuel company
Engineering Index Backfile | 1939|Keywords: Coal mines and mining
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