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FR1057388A - Progressive support for mines - Google Patents

Progressive support for mines

Info

Publication number
FR1057388A
FR1057388A FR1057388DA FR1057388A FR 1057388 A FR1057388 A FR 1057388A FR 1057388D A FR1057388D A FR 1057388DA FR 1057388 A FR1057388 A FR 1057388A
Authority
FR
France
Prior art keywords
mines
progressive support
progressive
support
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
Other languages
French (fr)
Inventor
Alfred Buschmann
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 filed Critical
Application granted granted Critical
Publication of FR1057388A publication Critical patent/FR1057388A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

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)
FR1057388D 1951-11-03 1952-05-27 Progressive support for mines Expired FR1057388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1057388X 1951-11-03

Publications (1)

Publication Number Publication Date
FR1057388A true FR1057388A (en) 1954-03-08

Family

ID=7718109

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1057388D Expired FR1057388A (en) 1951-11-03 1952-05-27 Progressive support for mines

Country Status (1)

Country Link
FR (1) FR1057388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094211B (en) * 1956-12-03 1960-12-08 Arnold Haarmann Dr Ing Longwall mining for steep or half-steep storage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094211B (en) * 1956-12-03 1960-12-08 Arnold Haarmann Dr Ing Longwall mining for steep or half-steep storage

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