FR874528A - iron prop for mines - Google Patents
iron prop for minesInfo
- Publication number
- FR874528A FR874528A FR874528DA FR874528A FR 874528 A FR874528 A FR 874528A FR 874528D A FR874528D A FR 874528DA FR 874528 A FR874528 A FR 874528A
- Authority
- FR
- France
- Prior art keywords
- mines
- iron prop
- prop
- iron
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title 2
- 229910052742 iron Inorganic materials 0.000 title 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
- E21D15/50—Component parts or details of props
- E21D15/502—Prop bodies characterised by their shape, e.g. of specified cross-section
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE874528X | 1939-07-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR874528A true FR874528A (en) | 1942-08-10 |
Family
ID=6816913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR874528D Expired FR874528A (en) | 1939-07-18 | 1941-08-07 | iron prop for mines |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR874528A (en) |
-
1941
- 1941-08-07 FR FR874528D patent/FR874528A/en not_active Expired
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