FR877145A - Process for extracting coal or other minerals - Google Patents

Process for extracting coal or other minerals

Info

Publication number
FR877145A
FR877145A FR877145DA FR877145A FR 877145 A FR877145 A FR 877145A FR 877145D A FR877145D A FR 877145DA FR 877145 A FR877145 A FR 877145A
Authority
FR
France
Prior art keywords
minerals
extracting coal
coal
extracting
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
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.)
FLOTTMANN AG
Original Assignee
FLOTTMANN AG
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 FLOTTMANN AG filed Critical FLOTTMANN AG
Application granted granted Critical
Publication of FR877145A publication Critical patent/FR877145A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading

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)
FR877145D 1940-11-22 1941-11-22 Process for extracting coal or other minerals Expired FR877145A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE877145X 1940-11-22

Publications (1)

Publication Number Publication Date
FR877145A true FR877145A (en) 1942-11-27

Family

ID=6817960

Family Applications (1)

Application Number Title Priority Date Filing Date
FR877145D Expired FR877145A (en) 1940-11-22 1941-11-22 Process for extracting coal or other minerals

Country Status (1)

Country Link
FR (1) FR877145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971194C (en) * 1954-07-09 1958-12-24 Konrad Grebe Method and device for the extraction of coal in steeply mounted floezen with a sled-like hanging pressure device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971194C (en) * 1954-07-09 1958-12-24 Konrad Grebe Method and device for the extraction of coal in steeply mounted floezen with a sled-like hanging pressure device

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