FR449330A - Bottom-freezing blasting sands process, for digging mine shafts - Google Patents

Bottom-freezing blasting sands process, for digging mine shafts

Info

Publication number
FR449330A
FR449330A FR449330DA FR449330A FR 449330 A FR449330 A FR 449330A FR 449330D A FR449330D A FR 449330DA FR 449330 A FR449330 A FR 449330A
Authority
FR
France
Prior art keywords
freezing
digging mine
mine shafts
sands process
blasting
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
Coppee Evence
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR449330A publication Critical patent/FR449330A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/10—Preparation of the ground
    • E21D1/12—Preparation of the ground by freezing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR449330D 1912-10-11 1912-10-11 Bottom-freezing blasting sands process, for digging mine shafts Expired FR449330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR449330T 1912-10-11

Publications (1)

Publication Number Publication Date
FR449330A true FR449330A (en) 1913-02-24

Family

ID=1489863

Family Applications (1)

Application Number Title Priority Date Filing Date
FR449330D Expired FR449330A (en) 1912-10-11 1912-10-11 Bottom-freezing blasting sands process, for digging mine shafts

Country Status (1)

Country Link
FR (1) FR449330A (en)

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