FR77183E - Method and device for the extraction of coal and other minerals - Google Patents
Method and device for the extraction of coal and other mineralsInfo
- 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
Links
- 239000003245 coal Substances 0.000 title 1
- 238000000605 extraction Methods 0.000 title 1
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 239000011707 mineral Substances 0.000 title 1
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)
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) |
-
1960
- 1960-02-19 FR FR818988A patent/FR77183E/en not_active Expired
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