FR1051870A - Chapeau de mine - Google Patents

Chapeau de mine

Info

Publication number
FR1051870A
FR1051870A FR1051870DA FR1051870A FR 1051870 A FR1051870 A FR 1051870A FR 1051870D A FR1051870D A FR 1051870DA FR 1051870 A FR1051870 A FR 1051870A
Authority
FR
France
Prior art keywords
hat
mine
mine hat
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
English (en)
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 FR1051870A publication Critical patent/FR1051870A/fr
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
    • E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section

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)
FR1051870D 1951-03-07 1952-02-28 Chapeau de mine Expired FR1051870A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1051870X 1951-03-07

Publications (1)

Publication Number Publication Date
FR1051870A true FR1051870A (fr) 1954-01-19

Family

ID=19867882

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1051870D Expired FR1051870A (fr) 1951-03-07 1952-02-28 Chapeau de mine

Country Status (1)

Country Link
FR (1) FR1051870A (fr)

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