ZW9984A1 - Collapsible elongate mine support - Google Patents

Collapsible elongate mine support

Info

Publication number
ZW9984A1
ZW9984A1 ZW99/84A ZW9984A ZW9984A1 ZW 9984 A1 ZW9984 A1 ZW 9984A1 ZW 99/84 A ZW99/84 A ZW 99/84A ZW 9984 A ZW9984 A ZW 9984A ZW 9984 A1 ZW9984 A1 ZW 9984A1
Authority
ZW
Zimbabwe
Prior art keywords
mine support
collapsible elongate
collapsible
elongate mine
support
Prior art date
Application number
ZW99/84A
Inventor
Dirk Cornelius Stephanu Venter
Original Assignee
Bestobell South Africa Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bestobell South Africa Ltd filed Critical Bestobell South Africa Ltd
Publication of ZW9984A1 publication Critical patent/ZW9984A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
ZW99/84A 1983-06-24 1984-06-22 Collapsible elongate mine support ZW9984A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
ZA834618 1983-06-24
ZA834619 1983-06-24
ZA837625 1983-10-13
ZA837657 1983-10-14
ZA838465 1983-11-14
ZA84824 1984-02-03

Publications (1)

Publication Number Publication Date
ZW9984A1 true ZW9984A1 (en) 1984-09-19

Family

ID=27560364

Family Applications (1)

Application Number Title Priority Date Filing Date
ZW99/84A ZW9984A1 (en) 1983-06-24 1984-06-22 Collapsible elongate mine support

Country Status (3)

Country Link
EP (1) EP0130770A3 (en)
CA (1) CA1218534A (en)
ZW (1) ZW9984A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8801338B2 (en) * 2011-11-28 2014-08-12 Micon Nested mine roof supports

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642603A (en) * 1926-06-03 1927-09-13 Martin J Conway Reenforced mine prop
DE1088905B (en) * 1958-12-02 1960-09-15 Rheinstahl Gmbh Wanheim Process for the production of conical cylindrical inner punches
DE3066863D1 (en) * 1979-11-02 1984-04-12 Mine Support Syst Pty Ltd Timber prop
GB2077808A (en) * 1980-05-09 1981-12-23 Longwall Mining Equipment Prop Improvements in props
GB2081340B (en) * 1980-07-22 1984-07-25 Brown Allan Henry George Deformable mine prop
GB2080364A (en) * 1980-07-22 1982-02-03 Hunt Leuchars & Hepburn Ltd Mine support prop
GB2096203A (en) * 1981-04-08 1982-10-13 Longwall Mining Equipment Prop Mine support

Also Published As

Publication number Publication date
CA1218534A (en) 1987-03-03
EP0130770A3 (en) 1986-05-14
EP0130770A2 (en) 1985-01-09

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