GB1388842A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB1388842A
GB1388842A GB3342171A GB3342171A GB1388842A GB 1388842 A GB1388842 A GB 1388842A GB 3342171 A GB3342171 A GB 3342171A GB 3342171 A GB3342171 A GB 3342171A GB 1388842 A GB1388842 A GB 1388842A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
supports
mine
roof
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB3342171A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Priority to GB3342171A priority Critical patent/GB1388842A/en
Priority to DE19722233673 priority patent/DE2233673C3/en
Priority to AU44596/72A priority patent/AU4459672A/en
Publication of GB1388842A publication Critical patent/GB1388842A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Road Signs Or Road Markings (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Treatment Of Fiber Materials (AREA)
GB3342171A 1971-07-16 1971-07-16 Mine roof supports Expired GB1388842A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3342171A GB1388842A (en) 1971-07-16 1971-07-16 Mine roof supports
DE19722233673 DE2233673C3 (en) 1971-07-16 1972-07-08 Pit lining element
AU44596/72A AU4459672A (en) 1971-07-16 1972-07-14 Improvements in or relating to mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3342171A GB1388842A (en) 1971-07-16 1971-07-16 Mine roof supports

Publications (1)

Publication Number Publication Date
GB1388842A true GB1388842A (en) 1975-03-26

Family

ID=10352748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3342171A Expired GB1388842A (en) 1971-07-16 1971-07-16 Mine roof supports

Country Status (3)

Country Link
AU (1) AU4459672A (en)
DE (1) DE2233673C3 (en)
GB (1) GB1388842A (en)

Also Published As

Publication number Publication date
DE2233673C3 (en) 1975-03-13
DE2233673B2 (en) 1974-07-25
DE2233673A1 (en) 1973-02-01
AU4459672A (en) 1974-01-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees