FR969717A - Effondreur pour étançon de mine - Google Patents

Effondreur pour étançon de mine

Info

Publication number
FR969717A
FR969717A FR969717DA FR969717A FR 969717 A FR969717 A FR 969717A FR 969717D A FR969717D A FR 969717DA FR 969717 A FR969717 A FR 969717A
Authority
FR
France
Prior art keywords
collector
mine prop
prop
mine
prop collector
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 FR969717A publication Critical patent/FR969717A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR969717D 1947-08-29 1948-07-27 Effondreur pour étançon de mine Expired FR969717A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL969717X 1947-08-29

Publications (1)

Publication Number Publication Date
FR969717A true FR969717A (fr) 1950-12-26

Family

ID=19866169

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969717D Expired FR969717A (fr) 1947-08-29 1948-07-27 Effondreur pour étançon de mine

Country Status (1)

Country Link
FR (1) FR969717A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975849C (de) * 1952-07-29 1962-10-25 Wilhelm Reppel Mehrteiliger Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975849C (de) * 1952-07-29 1962-10-25 Wilhelm Reppel Mehrteiliger Grubenstempel

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