FR672872A - Backfill projection device, for mines - Google Patents

Backfill projection device, for mines

Info

Publication number
FR672872A
FR672872A FR672872DA FR672872A FR 672872 A FR672872 A FR 672872A FR 672872D A FR672872D A FR 672872DA FR 672872 A FR672872 A FR 672872A
Authority
FR
France
Prior art keywords
backfill
mines
projection device
projection
backfill projection
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.)
Gutehoffnungshutte Oberhausen AG
Original Assignee
Gutehoffnungshutte Oberhausen AG
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 Gutehoffnungshutte Oberhausen AG filed Critical Gutehoffnungshutte Oberhausen AG
Application granted granted Critical
Publication of FR672872A publication Critical patent/FR672872A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/06—Filling-up mechanically

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)
FR672872D 1929-04-09 1929-04-09 Backfill projection device, for mines Expired FR672872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR672872T 1929-04-09

Publications (1)

Publication Number Publication Date
FR672872A true FR672872A (en) 1930-01-08

Family

ID=9017764

Family Applications (1)

Application Number Title Priority Date Filing Date
FR672872D Expired FR672872A (en) 1929-04-09 1929-04-09 Backfill projection device, for mines

Country Status (1)

Country Link
FR (1) FR672872A (en)

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