FR940455A - Chambreur pour trou de mine - Google Patents

Chambreur pour trou de mine

Info

Publication number
FR940455A
FR940455A FR940455DA FR940455A FR 940455 A FR940455 A FR 940455A FR 940455D A FR940455D A FR 940455DA FR 940455 A FR940455 A FR 940455A
Authority
FR
France
Prior art keywords
blasthole
chamber
blasthole chamber
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)
Inventor
Joseph Dionisotti
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 FR940455A publication Critical patent/FR940455A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR940455D 1946-02-23 1947-02-11 Chambreur pour trou de mine Expired FR940455A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH940455X 1946-02-23

Publications (1)

Publication Number Publication Date
FR940455A true FR940455A (fr) 1948-12-14

Family

ID=4549380

Family Applications (1)

Application Number Title Priority Date Filing Date
FR940455D Expired FR940455A (fr) 1946-02-23 1947-02-11 Chambreur pour trou de mine

Country Status (1)

Country Link
FR (1) FR940455A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526851A1 (fr) * 1982-05-11 1983-11-18 Turkmensk Ni Geologorasvedoc Appareil de forage rotatif notamment de puits producteurs d'eau et de puits de drainage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526851A1 (fr) * 1982-05-11 1983-11-18 Turkmensk Ni Geologorasvedoc Appareil de forage rotatif notamment de puits producteurs d'eau et de puits de drainage

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