FR899391A - Support system for mines - Google Patents
Support system for minesInfo
- Publication number
- FR899391A FR899391A FR899391DA FR899391A FR 899391 A FR899391 A FR 899391A FR 899391D A FR899391D A FR 899391DA FR 899391 A FR899391 A FR 899391A
- Authority
- FR
- France
- Prior art keywords
- mines
- support system
- support
- 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
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
- E21D15/50—Component parts or details of props
- E21D15/52—Extensible units located above or below standard props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE899391X | 1943-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR899391A true FR899391A (en) | 1945-05-29 |
Family
ID=6849496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR899391D Expired FR899391A (en) | 1943-05-25 | 1943-11-03 | Support system for mines |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR899391A (en) |
-
1943
- 1943-11-03 FR FR899391D patent/FR899391A/en not_active Expired
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