FR92217E - Support for mines and process for its advancement - Google Patents

Support for mines and process for its advancement

Info

Publication number
FR92217E
FR92217E FR22703A FR22703A FR92217E FR 92217 E FR92217 E FR 92217E FR 22703 A FR22703 A FR 22703A FR 22703 A FR22703 A FR 22703A FR 92217 E FR92217 E FR 92217E
Authority
FR
France
Prior art keywords
mines
advancement
support
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
FR22703A
Other languages
French (fr)
Inventor
Georges Alacchi
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
Priority to FR22703A priority Critical patent/FR92217E/en
Application granted granted Critical
Publication of FR92217E publication Critical patent/FR92217E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR22703A 1965-06-29 1965-06-29 Support for mines and process for its advancement Expired FR92217E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR22703A FR92217E (en) 1965-06-29 1965-06-29 Support for mines and process for its advancement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR22703A FR92217E (en) 1965-06-29 1965-06-29 Support for mines and process for its advancement

Publications (1)

Publication Number Publication Date
FR92217E true FR92217E (en) 1968-10-11

Family

ID=8583312

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22703A Expired FR92217E (en) 1965-06-29 1965-06-29 Support for mines and process for its advancement

Country Status (1)

Country Link
FR (1) FR92217E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748861A (en) * 1971-06-16 1973-07-31 Groetschel Karl Maria Mine roof support with means for lifting the base elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748861A (en) * 1971-06-16 1973-07-31 Groetschel Karl Maria Mine roof support with means for lifting the base elements

Similar Documents

Publication Publication Date Title
FR1505430A (en) 11-deoxyprostaglandins and process for their preparation
FR1506081A (en) Duplication process
FR1497746A (en) Electrostatic casting process and apparatus
FR92217E (en) Support for mines and process for its advancement
FR90706E (en) Support for mines and process for its advancement
FR1467012A (en) Support for mines and process for its advancement
FR1445820A (en) Method and apparatus for making briquettes
FR1504278A (en) Gas carburizing process
FR1486253A (en) Flocked support and process for its manufacture
FR1466696A (en) 1-carnitinamide d-camphorate and its preparation process
FR1462647A (en) Thermo-graphic reproduction process
FR1499253A (en) Aliphatic hydrocarbon oxychlorination process
FR1503469A (en) Diazotype process
CH455368A (en) Cigar holder and method for its manufacture
FR1445043A (en) Sintering process
FR1396553A (en) Construction process for greenhouse-tunnels and chassis-tunnels
FR1506793A (en) Hydrocracking process
FR1540722A (en) New cyclobutanethiones and thietanethiones and process for preparing them
FR1463402A (en) New oxazepines and process for their preparation
FR1470833A (en) Reproduction process
FR1506166A (en) Reproduction process
FR1445355A (en) scale and its construction method
FR1452710A (en) Oxdiazoles-1-3-4 and process for their production
FR1460135A (en) Mechanotherapy method and apparatus
FR1483132A (en) Aliphatic hydrocarbon oxychlorination process