DE290683C - - Google Patents
Info
- Publication number
- DE290683C DE290683C DENDAT290683D DE290683DA DE290683C DE 290683 C DE290683 C DE 290683C DE NDAT290683 D DENDAT290683 D DE NDAT290683D DE 290683D A DE290683D A DE 290683DA DE 290683 C DE290683 C DE 290683C
- Authority
- DE
- Germany
- Prior art keywords
- face
- mining
- rows
- supporting
- arranged parallel
- 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
Links
- 239000003245 coal Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 claims 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nonmetallic Welding Materials (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE290683C true DE290683C (cs) |
Family
ID=545623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT290683D Active DE290683C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE290683C (cs) |
-
0
- DE DENDAT290683D patent/DE290683C/de active Active
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