BR9101574A - PROCESS OF ADVANCING THE EXCAVATION OF POCOS DE MINA - Google Patents

PROCESS OF ADVANCING THE EXCAVATION OF POCOS DE MINA

Info

Publication number
BR9101574A
BR9101574A BR919101574A BR9101574A BR9101574A BR 9101574 A BR9101574 A BR 9101574A BR 919101574 A BR919101574 A BR 919101574A BR 9101574 A BR9101574 A BR 9101574A BR 9101574 A BR9101574 A BR 9101574A
Authority
BR
Brazil
Prior art keywords
pocos
mina
excavation
advancing
Prior art date
Application number
BR919101574A
Other languages
Portuguese (pt)
Inventor
Bruce Alexander Sobey
Malcolm Ernest Greenway
Helmut Teerman
Bernadus Jozefus Dost
Sidney Gibson
Original Assignee
Anglo Amer Corp South Africa
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
Priority claimed from GB909008669A external-priority patent/GB9008669D0/en
Application filed by Anglo Amer Corp South Africa filed Critical Anglo Amer Corp South Africa
Publication of BR9101574A publication Critical patent/BR9101574A/en

Links

BR919101574A 1990-04-18 1991-04-18 PROCESS OF ADVANCING THE EXCAVATION OF POCOS DE MINA BR9101574A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909008669A GB9008669D0 (en) 1990-04-18 1990-04-18 The sinking of mine shafts
ZA902920 1990-04-18

Publications (1)

Publication Number Publication Date
BR9101574A true BR9101574A (en) 1991-12-10

Family

ID=26296951

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919101574A BR9101574A (en) 1990-04-18 1991-04-18 PROCESS OF ADVANCING THE EXCAVATION OF POCOS DE MINA

Country Status (4)

Country Link
AU (1) AU650010B2 (en)
BR (1) BR9101574A (en)
CA (1) CA2040716C (en)
ZW (1) ZW4591A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112627826B (en) * 2020-12-03 2022-05-03 招金矿业股份有限公司夏甸金矿 Safe and efficient shaft tunneling method
CN112983429A (en) * 2021-04-15 2021-06-18 北京中岩智泊科技有限公司 Open caisson heading machine
CN117386374B (en) * 2023-12-13 2024-03-08 中国建筑第五工程局有限公司 Shaft tunneling device with supporting structure

Also Published As

Publication number Publication date
ZW4591A1 (en) 1992-04-22
CA2040716C (en) 2003-10-21
CA2040716A1 (en) 1991-10-19
AU7525391A (en) 1991-10-24
AU650010B2 (en) 1994-06-09

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Legal Events

Date Code Title Description
FF Decision: intention to grant
KD Notifcation of receipt (letter patent)
FG Letter patent granted
B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 18/04/2006