FR1059850A - Height support - Google Patents

Height support

Info

Publication number
FR1059850A
FR1059850A FR1059850DA FR1059850A FR 1059850 A FR1059850 A FR 1059850A FR 1059850D A FR1059850D A FR 1059850DA FR 1059850 A FR1059850 A FR 1059850A
Authority
FR
France
Prior art keywords
height support
height
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)
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.)
Directie van de Staatsmijnen in Limburg
Original Assignee
Directie van de Staatsmijnen in Limburg
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 Directie van de Staatsmijnen in Limburg filed Critical Directie van de Staatsmijnen in Limburg
Application granted granted Critical
Publication of FR1059850A publication Critical patent/FR1059850A/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
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated 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)
  • Bridges Or Land Bridges (AREA)
FR1059850D 1951-03-07 1952-03-04 Height support Expired FR1059850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL709243X 1951-03-07

Publications (1)

Publication Number Publication Date
FR1059850A true FR1059850A (en) 1954-03-29

Family

ID=19812159

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1059850D Expired FR1059850A (en) 1951-03-07 1952-03-04 Height support

Country Status (4)

Country Link
BE (1) BE509687A (en)
FR (1) FR1059850A (en)
GB (1) GB709243A (en)
NL (1) NL77995C (en)

Also Published As

Publication number Publication date
NL77995C (en)
BE509687A (en)
GB709243A (en) 1954-05-19

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