FR573659A - Hydraulic backfill system - Google Patents

Hydraulic backfill system

Info

Publication number
FR573659A
FR573659A FR573659DA FR573659A FR 573659 A FR573659 A FR 573659A FR 573659D A FR573659D A FR 573659DA FR 573659 A FR573659 A FR 573659A
Authority
FR
France
Prior art keywords
backfill system
hydraulic backfill
hydraulic
backfill
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
Leon Morin
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 FR573659A publication Critical patent/FR573659A/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
    • E21F15/08—Filling-up hydraulically or pneumatically

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)
FR573659D 1923-02-21 1923-02-21 Hydraulic backfill system Expired FR573659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR573659T 1923-02-21

Publications (1)

Publication Number Publication Date
FR573659A true FR573659A (en) 1924-06-27

Family

ID=8952142

Family Applications (1)

Application Number Title Priority Date Filing Date
FR573659D Expired FR573659A (en) 1923-02-21 1923-02-21 Hydraulic backfill system

Country Status (1)

Country Link
FR (1) FR573659A (en)

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