ZA981492B
(en )
1998-08-28
Yieldable mine roof support
GB2271589B
(en )
1996-12-18
Method and apparatus for supporting a mine roof
PL313687A1
(en )
1996-10-14
Roof support arrangement for longwall workings in vicinity of their crossings with galleries
PL315107A1
(en )
1997-01-06
Apparatus for prestressing mine roof supporting props and mine roof supporting prop as such
GB2297348B
(en )
1997-03-26
Mining roof support
PL308046A1
(en )
1996-06-24
Apparatus for hanging loads on steel roof supporting structure in mine gallery
GB2239286B
(en )
1994-03-02
Mine roof support
PL315016A1
(en )
1997-01-06
Prestressing apparatus for aload carrying system and mine roof supporting prop
PL315140A1
(en )
1998-01-19
Roof support in filled longwall headings and method of supporting roofs in such headings
PL316061A1
(en )
1998-03-16
Sling hanging catch in particular for hanging loads on a member of mine gallery steel roof supporting system
GB2274862B
(en )
1996-12-18
Method and apparatus for supporting a mine roof
GB9617190D0
(en )
1996-09-25
Mine roof supports and supporting methods
ZA984887B
(en )
1998-12-29
Mine support prop
PL316060A1
(en )
1998-03-16
Hook in particular that for suspending a traverse on a member of mine gallery roof supporting system
PL297115A1
(en )
1994-06-27
Mine roof support
PL321285A1
(en )
1999-02-01
Mining roof supporting system
PL310093A1
(en )
1997-03-03
Single mine roof supporting prop
PL308031A1
(en )
1996-10-14
Longwall roof supporting arrangement
PL304199A1
(en )
1996-01-08
Prop-type roof supports for mines
PL315992A1
(en )
1998-03-16
Mining roof supports
PL54568Y1
(en )
1996-10-31
Mine roof support
ZA99286B
(en )
1999-07-15
Roof support arrangement for mining apparatus and roof bolting equipment.
PL56897Y3
(en )
1999-02-26
Mining roof supports
PL101827U1
(en )
1996-07-08
Roof support prop
GB9218992D0
(en )
1992-10-21
Improvements in mining roof supports