FR77183E - Method and device for the extraction of coal and other minerals - Google Patents

Method and device for the extraction of coal and other minerals

Info

Publication number
FR77183E
FR77183E FR818988A FR818988A FR77183E FR 77183 E FR77183 E FR 77183E FR 818988 A FR818988 A FR 818988A FR 818988 A FR818988 A FR 818988A FR 77183 E FR77183 E FR 77183E
Authority
FR
France
Prior art keywords
minerals
coal
extraction
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
FR818988A
Other languages
French (fr)
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.)
Stahlwerke Brueninghaus GmbH
Original Assignee
Stahlwerke Brueninghaus GmbH
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 Stahlwerke Brueninghaus GmbH filed Critical Stahlwerke Brueninghaus GmbH
Priority to FR818988A priority Critical patent/FR77183E/en
Application granted granted Critical
Publication of FR77183E publication Critical patent/FR77183E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/32—Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements
    • E21C27/38—Machine stationary while planing in an arc

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)
FR818988A 1960-02-19 1960-02-19 Method and device for the extraction of coal and other minerals Expired FR77183E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR818988A FR77183E (en) 1960-02-19 1960-02-19 Method and device for the extraction of coal and other minerals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR818988A FR77183E (en) 1960-02-19 1960-02-19 Method and device for the extraction of coal and other minerals

Publications (1)

Publication Number Publication Date
FR77183E true FR77183E (en) 1962-01-27

Family

ID=8725490

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818988A Expired FR77183E (en) 1960-02-19 1960-02-19 Method and device for the extraction of coal and other minerals

Country Status (1)

Country Link
FR (1) FR77183E (en)

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