ZW4591A1 - Mine shaft sinking - Google Patents

Mine shaft sinking

Info

Publication number: ZW4591A1
Authority: ZW; Zimbabwe
Prior art keywords: mine shaft; shaft sinking; sinking; mine; shaft
Prior art date: 1990-04-18

Application number

ZW45/91A

Inventor

Alexander Sobey Bruce

Ernest Greenway Malcom

Jozefus Dost Bernadus

Gibson Sidney

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.)

1990-04-18

Filing date

1991-04-17

Publication date

1992-04-22

1990-04-18 Priority claimed from GB909008669A external-priority patent/GB9008669D0/en

1991-04-17 Application filed by Anglo Amer Corp South Africa filed Critical Anglo Amer Corp South Africa

1992-04-22 Publication of ZW4591A1 publication Critical patent/ZW4591A1/en

Links

ZW45/91A 1990-04-18 1991-04-17 Mine shaft sinking ZW4591A1 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number	Publication Date
ZW4591A1 true ZW4591A1 (en)	1992-04-22

Family

ID=26296951

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZW45/91A ZW4591A1 (en)	1990-04-18	1991-04-17	Mine shaft sinking

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

1991
- 1991-04-17 CA CA002040716A patent/CA2040716C/en not_active Expired - Lifetime
- 1991-04-17 ZW ZW45/91A patent/ZW4591A1/en unknown
- 1991-04-18 BR BR919101574A patent/BR9101574A/en not_active IP Right Cessation
- 1991-04-18 AU AU75253/91A patent/AU650010B2/en not_active Expired

Also Published As

Publication number	Publication date
AU650010B2 (en)	1994-06-09
CA2040716C (en)	2003-10-21
CA2040716A1 (en)	1991-10-19
AU7525391A (en)	1991-10-24
BR9101574A (en)	1991-12-10

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