FR38830E - Improvements to mechanical backfillers - Google Patents

Improvements to mechanical backfillers

Info

Publication number
FR38830E
FR38830E FR38830DA FR38830E FR 38830 E FR38830 E FR 38830E FR 38830D A FR38830D A FR 38830DA FR 38830 E FR38830 E FR 38830E
Authority
FR
France
Prior art keywords
backfillers
mechanical
mechanical backfillers
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
Louis-Joseph-Eugene Boileau
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 FR38830E publication Critical patent/FR38830E/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)
FR38830D 1930-02-11 1930-02-11 Improvements to mechanical backfillers Expired FR38830E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR38830T 1930-02-11

Publications (1)

Publication Number Publication Date
FR38830E true FR38830E (en) 1931-07-31

Family

ID=8675291

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38830D Expired FR38830E (en) 1930-02-11 1930-02-11 Improvements to mechanical backfillers

Country Status (1)

Country Link
FR (1) FR38830E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763436A (en) * 1951-12-29 1956-09-18 Jeffrey Mfg Co Underground mechanical crusher and stower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763436A (en) * 1951-12-29 1956-09-18 Jeffrey Mfg Co Underground mechanical crusher and stower

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