ZA915093B - Yieldable prop - Google Patents

Yieldable prop

Info

Publication number
ZA915093B
ZA915093B ZA915093A ZA915093A ZA915093B ZA 915093 B ZA915093 B ZA 915093B ZA 915093 A ZA915093 A ZA 915093A ZA 915093 A ZA915093 A ZA 915093A ZA 915093 B ZA915093 B ZA 915093B
Authority
ZA
South Africa
Prior art keywords
yieldable prop
yieldable
prop
Prior art date
Application number
ZA915093A
Inventor
Christiaan Abraham Visser
Abraham Visser Christiaan
Johann Smit
Smit Johann
Original Assignee
Grinaker Constr 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 Grinaker Constr Ltd filed Critical Grinaker Constr Ltd
Priority to ZA915093A priority Critical patent/ZA915093B/en
Publication of ZA915093B publication Critical patent/ZA915093B/en

Links

ZA915093A 1990-07-03 1991-07-02 Yieldable prop ZA915093B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA915093A ZA915093B (en) 1990-07-03 1991-07-02 Yieldable prop

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA905168 1990-07-03
ZA915093A ZA915093B (en) 1990-07-03 1991-07-02 Yieldable prop

Publications (1)

Publication Number Publication Date
ZA915093B true ZA915093B (en) 1992-03-25

Family

ID=27141235

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA915093A ZA915093B (en) 1990-07-03 1991-07-02 Yieldable prop

Country Status (1)

Country Link
ZA (1) ZA915093B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9611738B2 (en) 2014-08-27 2017-04-04 Burrell Mining Products, Inc. Ventilated mine roof support
US9903203B2 (en) 2014-08-27 2018-02-27 Burrell Mining Products, Inc. Ventilated mine roof support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9611738B2 (en) 2014-08-27 2017-04-04 Burrell Mining Products, Inc. Ventilated mine roof support
US9903203B2 (en) 2014-08-27 2018-02-27 Burrell Mining Products, Inc. Ventilated mine roof support

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