DE250704C - - Google Patents

Info

Publication number
DE250704C
DE250704C DENDAT250704D DE250704DA DE250704C DE 250704 C DE250704 C DE 250704C DE NDAT250704 D DENDAT250704 D DE NDAT250704D DE 250704D A DE250704D A DE 250704DA DE 250704 C DE250704 C DE 250704C
Authority
DE
Germany
Prior art keywords
mine
depression
degassing
enrichment
stronger
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.)
Active
Application number
DENDAT250704D
Other languages
German (de)
English (en)
Publication of DE250704C publication Critical patent/DE250704C/de
Active legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
DENDAT250704D Active DE250704C (cg-RX-API-DMAC7.html)

Publications (1)

Publication Number Publication Date
DE250704C true DE250704C (cg-RX-API-DMAC7.html)

Family

ID=509208

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT250704D Active DE250704C (cg-RX-API-DMAC7.html)

Country Status (1)

Country Link
DE (1) DE250704C (cg-RX-API-DMAC7.html)

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