AT259489B - Migrating extension element for underground mining operations - Google Patents

Migrating extension element for underground mining operations

Info

Publication number
AT259489B
AT259489B AT123665A AT123665A AT259489B AT 259489 B AT259489 B AT 259489B AT 123665 A AT123665 A AT 123665A AT 123665 A AT123665 A AT 123665A AT 259489 B AT259489 B AT 259489B
Authority
AT
Austria
Prior art keywords
migrating
extension element
underground mining
mining operations
underground
Prior art date
Application number
AT123665A
Other languages
German (de)
Original Assignee
Gullick 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 Ltd filed Critical Gullick Ltd
Application granted granted Critical
Publication of AT259489B publication Critical patent/AT259489B/en

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
    • 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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices

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)
  • Earth Drilling (AREA)
  • Bridges Or Land Bridges (AREA)
  • Tents Or Canopies (AREA)
AT123665A 1964-02-12 1965-02-11 Migrating extension element for underground mining operations AT259489B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5848/64A GB1045353A (en) 1964-02-12 1964-02-12 Improvements in or relating to mine roof supports

Publications (1)

Publication Number Publication Date
AT259489B true AT259489B (en) 1968-01-10

Family

ID=9803770

Family Applications (1)

Application Number Title Priority Date Filing Date
AT123665A AT259489B (en) 1964-02-12 1965-02-11 Migrating extension element for underground mining operations

Country Status (5)

Country Link
US (1) US3365893A (en)
AT (1) AT259489B (en)
DE (1) DE1942914U (en)
FR (1) FR1424263A (en)
GB (1) GB1045353A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1236590A (en) * 1968-10-01 1971-06-23 Gullick Dobson Ltd Improvements in or relating to mine roof supports
DE3730711A1 (en) * 1987-09-12 1989-03-23 Bochumer Eisen Heintzmann ELECTRO-HYDRAULIC PROGRAM CONTROL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910281A (en) * 1956-10-19 1959-10-27 Rheinstahl Wanheim Gmbh Prop and conveyer arrangement for mines
GB950066A (en) * 1960-02-18 1964-02-19 Gullick Ltd Improvements in or relating to advancing roof supporting means for mines
FR1303511A (en) * 1961-07-22 1962-09-14 Mines Domaniales De Potasse Telescopic extension system with hydraulic lift for supporting elements in size

Also Published As

Publication number Publication date
US3365893A (en) 1968-01-30
GB1045353A (en) 1966-10-12
DE1942914U (en) 1966-07-28
FR1424263A (en) 1966-01-07

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