ZA713100B - An installation for safe-guarding persons in underground operations - Google Patents
An installation for safe-guarding persons in underground operationsInfo
- Publication number
- ZA713100B ZA713100B ZA713100A ZA713100A ZA713100B ZA 713100 B ZA713100 B ZA 713100B ZA 713100 A ZA713100 A ZA 713100A ZA 713100 A ZA713100 A ZA 713100A ZA 713100 B ZA713100 B ZA 713100B
- Authority
- ZA
- South Africa
- Prior art keywords
- guarding
- persons
- safe
- installation
- underground operations
- Prior art date
Links
- 238000009434 installation Methods 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Emergency Lowering Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2026168A DE2026168C2 (en) | 1970-05-29 | 1970-05-29 | Device for securing persons provided with portable, continuously operated transmitters in underground operation |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA713100B true ZA713100B (en) | 1972-01-26 |
Family
ID=5772358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA713100A ZA713100B (en) | 1970-05-29 | 1971-05-12 | An installation for safe-guarding persons in underground operations |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5141841B1 (en) |
DE (1) | DE2026168C2 (en) |
ZA (1) | ZA713100B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2937804B2 (en) * | 1979-09-19 | 1981-07-09 | Brust und Neugebauer Maschinenbau- Ingenieurbüro für rationelle Fertigung GmbH, 4236 Hamminkeln | Driving bridge over an underground belt conveyor |
JPS5861615U (en) * | 1981-10-21 | 1983-04-26 | 株式会社鳥海商会 | Vehicle air conditioner |
DE3643236A1 (en) * | 1986-12-18 | 1988-07-07 | Ruhrkohle Ag | PERSONAL PROTECTION RADIO |
DE10029918B4 (en) * | 1999-07-09 | 2008-10-30 | Bucyrus Dbt Europe Gmbh | Method and device for detecting the presence of persons in underground mining |
DE102004024073A1 (en) * | 2004-05-13 | 2006-01-26 | Rag Ag | Device for detecting person in hazard area, especially in mine, has portable transmitter-receiver with 2 transmitters and 2 receivers; one receiver has 3 orthogonal independent coils operating at 9 KHz, one has one coil operating at 7 KHz |
-
1970
- 1970-05-29 DE DE2026168A patent/DE2026168C2/en not_active Expired
-
1971
- 1971-05-12 ZA ZA713100A patent/ZA713100B/en unknown
- 1971-05-29 JP JP46036729A patent/JPS5141841B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2026168A1 (en) | 1972-01-13 |
DE2026168C2 (en) | 1974-04-25 |
JPS5141841B1 (en) | 1976-11-12 |
DE2026168B2 (en) | 1972-01-13 |
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