BE556673A - - Google Patents

Info

Publication number
BE556673A
BE556673A BE556673DA BE556673A BE 556673 A BE556673 A BE 556673A BE 556673D A BE556673D A BE 556673DA BE 556673 A BE556673 A BE 556673A
Authority
BE
Belgium
Prior art keywords
machine
cylinder
section
coal
tube
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE556673A publication Critical patent/BE556673A/fr

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C27/00Machines which completely free the mineral from the seam
    • E21C27/20Mineral freed by means not involving slitting
    • E21C27/22Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type

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)
  • Disintegrating Or Milling (AREA)
BE556673D BE556673A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE556673A true BE556673A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=180371

Family Applications (1)

Application Number Title Priority Date Filing Date
BE556673D BE556673A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE556673A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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