FR83464E - Improvements made to mine supports - Google Patents

Improvements made to mine supports

Info

Publication number
FR83464E
FR83464E FR931467A FR931467A FR83464E FR 83464 E FR83464 E FR 83464E FR 931467 A FR931467 A FR 931467A FR 931467 A FR931467 A FR 931467A FR 83464 E FR83464 E FR 83464E
Authority
FR
France
Prior art keywords
improvements made
mine supports
mine
supports
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
FR931467A
Other languages
French (fr)
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.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics 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 Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to FR931467A priority Critical patent/FR83464E/en
Application granted granted Critical
Publication of FR83464E publication Critical patent/FR83464E/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)
FR931467A 1963-04-12 1963-04-12 Improvements made to mine supports Expired FR83464E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR931467A FR83464E (en) 1963-04-12 1963-04-12 Improvements made to mine supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR931467A FR83464E (en) 1963-04-12 1963-04-12 Improvements made to mine supports

Publications (1)

Publication Number Publication Date
FR83464E true FR83464E (en) 1964-08-21

Family

ID=8801617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR931467A Expired FR83464E (en) 1963-04-12 1963-04-12 Improvements made to mine supports

Country Status (1)

Country Link
FR (1) FR83464E (en)

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