[go: up one dir, main page]

ZA70822B - Supports for underground excavations - Google Patents

Supports for underground excavations

Info

Publication number
ZA70822B
ZA70822B ZA700822A ZA70822A ZA70822B ZA 70822 B ZA70822 B ZA 70822B ZA 700822 A ZA700822 A ZA 700822A ZA 70822 A ZA70822 A ZA 70822A ZA 70822 B ZA70822 B ZA 70822B
Authority
ZA
South Africa
Prior art keywords
supports
underground excavations
excavations
underground
Prior art date
Application number
ZA700822A
Inventor
R Hopley
Original Assignee
Boart Drilling & Contracting
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 Boart Drilling & Contracting filed Critical Boart Drilling & Contracting
Priority to ZA700822A priority Critical patent/ZA70822B/en
Publication of ZA70822B publication Critical patent/ZA70822B/en

Links

ZA700822A 1970-02-06 1970-02-06 Supports for underground excavations ZA70822B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA700822A ZA70822B (en) 1970-02-06 1970-02-06 Supports for underground excavations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA700822A ZA70822B (en) 1970-02-06 1970-02-06 Supports for underground excavations

Publications (1)

Publication Number Publication Date
ZA70822B true ZA70822B (en) 1971-09-29

Family

ID=25561699

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA700822A ZA70822B (en) 1970-02-06 1970-02-06 Supports for underground excavations

Country Status (1)

Country Link
ZA (1) ZA70822B (en)

Similar Documents

Publication Publication Date Title
IL37871A0 (en) Pipeline crawler
ZA71767B (en) Drill boom
ZA71515B (en) Earth borning machine
GB1385197A (en) Tunnels
HK39876A (en) Tubular member for tunnel excavation use
ZM13571A1 (en) Earth drilling machine
AU3738971A (en) Earth drilling apparatus
CA929365A (en) Tunnelling shield
ZA714955B (en) Rock drill
CA947775A (en) Tunneling machine
ZA707462B (en) Rock drill
ZA732786B (en) Mining installations
JPS54132403A (en) Drilling apparatus
GB1389111A (en) Mining equipment for setting supports
ZA70822B (en) Supports for underground excavations
ZA716282B (en) Mining machine
ZM1171A1 (en) Supports for excavations
JPS5513388A (en) Excavator
AU451245B2 (en) Mining apparatus
CA853064A (en) Earth boring apparatus
CA832276A (en) Method for solution mining
CA931366A (en) Device for constructing tunnels
CA859402A (en) Shield for constructing tunnels
ZM11470A1 (en) Supporting rock faces
ZA70846B (en) Mining methods