DE3663554D1
(en )
1989-06-29
Method and apparatus for installment of underground utilities
GB2157344B
(en )
1987-03-25
Method and apparatus for the production of underground pipelines
GR870455B
(en )
1987-07-10
Improved method of and means for lining and over wrapping of conduits and the lining of tunnels
AU6724387A
(en )
1987-07-01
Method for restoring underground pipelines
ZA831658B
(en )
1984-10-31
Mine stopping or the like and method of and jack for installing same
GB2161522B
(en )
1987-07-22
Method of and device for the underground installation of pipelines
ZW11483A1
(en )
1983-07-27
Method of and apparatus for repairing drains and underground pipelines
GB2156877B
(en )
1988-02-10
Method and apparatus for the subsequent underground sealing of dumps
JPS5777785A
(en )
1982-05-15
Boring apparatus for and method of replacing or removing underground cables
GB2188081B
(en )
1988-03-09
Pipeline arrangement for refilling of the voids of underground workings
IL62068A0
(en )
1981-03-31
Method of and apparatus for installing underground lines,pipes or cables
ZA873617B
(en )
1987-11-16
Method and equipment for cooling of underground mine-shafts and/or machinery installed therein
DE3373123D1
(en )
1987-09-24
Bore-hole pump and method for its protection
PL264332A1
(en )
1988-10-27
Method for protecting underground pipelines against detrimental consequences of mining damages
PL269796A1
(en )
1989-07-10
Method of protecting mining equipment against deformations
PL262683A1
(en )
1988-06-23
Method for protecting building objects against damaging consequences of mining activities
HUT45739A
(en )
1988-08-29
Equipment for cathodic protection of underground metallic objects, especially pipelines
GB2212514B
(en )
1992-07-08
Cathodic protection of subterranean pipes
PL268331A2
(en )
1988-12-22
Method for underground mining of useful deposits
GB8825831D0
(en )
1988-12-07
Protection of subsea pipelines
ZA959646B
(en )
1996-06-10
Method of an apparatus for mining underground
JPS57108340A
(en )
1982-07-06
Repairing of underground embedded pipe
PL263692A1
(en )
1988-09-29
Method for repairing damaged components of mine excavation lining
PL268505A1
(en )
1989-05-02
Method of anticorrosion outer protection of pipes
PL247388A1
(en )
1985-11-05
Asphalt/wax compound for anti-corrosion protection of underground mine pipelines