FR1074723A - Extraction du charbon ou autres matières - Google Patents

Extraction du charbon ou autres matières

Info

Publication number
FR1074723A
FR1074723A FR1074723DA FR1074723A FR 1074723 A FR1074723 A FR 1074723A FR 1074723D A FR1074723D A FR 1074723DA FR 1074723 A FR1074723 A FR 1074723A
Authority
FR
France
Prior art keywords
coal
extraction
materials
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)
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of FR1074723A publication Critical patent/FR1074723A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/68—Machines for making slits combined with equipment for removing, e.g. by loading, material won by other means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1074723D 1951-12-28 1952-12-27 Extraction du charbon ou autres matières Expired FR1074723A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1074723X 1951-12-28

Publications (1)

Publication Number Publication Date
FR1074723A true FR1074723A (fr) 1954-10-07

Family

ID=10872108

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1074723D Expired FR1074723A (fr) 1951-12-28 1952-12-27 Extraction du charbon ou autres matières

Country Status (1)

Country Link
FR (1) FR1074723A (fr)

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