OA02923A - Airtight air barriers for underground mines and quarries. - Google Patents

Airtight air barriers for underground mines and quarries.

Info

Publication number
OA02923A
OA02923A OA53415A OA53415A OA02923A OA 02923 A OA02923 A OA 02923A OA 53415 A OA53415 A OA 53415A OA 53415 A OA53415 A OA 53415A OA 02923 A OA02923 A OA 02923A
Authority
OA
OAPI
Prior art keywords
quarries
airtight air
underground mines
air barriers
barriers
Prior art date
Application number
OA53415A
Other languages
French (fr)
Original Assignee
Cie Des Potasses Du
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 Cie Des Potasses Du filed Critical Cie Des Potasses Du
Priority to OA53415A priority Critical patent/OA02923A/en
Priority to FR6937144A priority patent/FR2027532A1/fr
Publication of OA02923A publication Critical patent/OA02923A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/14—Air partitions; Air locks

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)
OA53415A 1968-11-05 1968-11-05 Airtight air barriers for underground mines and quarries. OA02923A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
OA53415A OA02923A (en) 1968-11-05 1968-11-05 Airtight air barriers for underground mines and quarries.
FR6937144A FR2027532A1 (en) 1968-11-05 1969-10-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
OA53415A OA02923A (en) 1968-11-05 1968-11-05 Airtight air barriers for underground mines and quarries.

Publications (1)

Publication Number Publication Date
OA02923A true OA02923A (en) 1970-12-15

Family

ID=19929146

Family Applications (1)

Application Number Title Priority Date Filing Date
OA53415A OA02923A (en) 1968-11-05 1968-11-05 Airtight air barriers for underground mines and quarries.

Country Status (2)

Country Link
FR (1) FR2027532A1 (en)
OA (1) OA02923A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9622675D0 (en) 1996-10-31 1997-01-08 Fosroc International Ltd Process and equipment for ventilating underground workings

Also Published As

Publication number Publication date
FR2027532A1 (en) 1970-10-02

Similar Documents

Publication Publication Date Title
CH523190A (en) Vibrating conveyor
BE770513A (en) DRIVE SYSTEMS
IT941180B (en) DRILLING AND PICKING MACHINE MOUNTED ON TRUCK
TR18179A (en) MINE QUARRIES WALLS COVER
CH545408A (en) Excavation system with tunneling equipment
BE815537A (en) COUPLING CHAIN
BR7105406D0 (en) CONVEYOR IMPROVEMENTS
OA02923A (en) Airtight air barriers for underground mines and quarries.
BE764280A (en) PACKAGING MATERIAL
ATA53973A (en) STONE STACKER
BE762095A (en) SEALING DEVICE FOR MOBILE SHAFTS
CH494695A (en) Concrete transport bucket
BE746281A (en) SURGE PROTECTORS FOR ENERGY TRANSPORT SYSTEMS
BE820558A (en) TUBING SEGMENTS TRANSPORT DEVICE FOR TUNNEL DIGGING AND OTHER
SE389698B (en) UNITS FOR EXCAVATION OF DITCHES AND THE LIKE
CH476961A (en) Cinder bucket
SU415365A1 (en)
AT328537B (en) DIFFERENTIAL PROTECTION DEVICE
CA943356A (en) Air stopping in underground mines
BE789880A (en) IMPROVEMENTS RELATING TO EXCAVATION AND / OR LOADING DEVICES.
SE7406239L (en) SET AND DEVICE FOR MINERAL MINING UNDER THE UNDERGROUND.
CH498283A (en) Rock blasting device
FR1487717A (en) Support for underground mining
FR1472316A (en) Mining machine
FI52623C (en) Device for creating and transmitting motion.