Pneumatic extractor for fluidised bed - has pulsating airstream circulating through diffusing tank
BE892705R
Hydrogen pyrolysis plant for all types of coal or lignite - where semi:coke is recycled to pyrolysis tube so caking coals can be pyrolysed
AU8000382A
Installation for hydrogenopyrolysis of coal and lignite
WO8202210A1
Installation for hydrogenopyrolysis of coal and lignite
BE886903A
New apparatus for hydrogenopyrolysis of coal and lignite.
AU4161678A
Thermal-operated valve
CA1087090A
Thermostatically controlled valve for automatically regulating the flow of a cooling liquid for gases obtained by underground gasification of solid fuels or by "in situ" combustion of underground hydrocarbons
ZA7604547B
Mew process for exploiting a deposit of coal or lignite by underground gasification at high pressure
GB1501310A
Process for the underground gasification of a deposit
ZA7604241B
Communications system
GB1541278A
Comounication system particularly suitable for establishing radioelectric communication in tunnels and along linear paths above the ground
AU1452876A
Cooling gas
ZA7603120B
Method and apparatus for cooling gas
GB1454324A
Recovering combustible gases from underground deposits of coal or bituminous shale
ZA7305267B
Wireless telecommunication system for use in confined spaces
NL173337B
Improvement of a transmission medium for radio-frequent signals in tunnels and the like, including a coaxial cable providing openings for the radio-frequent energy radiation.
GB1320826A
Suction device for emptying vessels containing granular mateial
CA931238A
Wireless telecommunication system for use in confined spaces
DE1771721A1
Method and device for the rapid charring of coal or other combustible solids present in small grain size
