File:Rock Falls - Preventing Rock Fall Injuries in Underground Mines.webm
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Rock_Falls_-_Preventing_Rock_Fall_Injuries_in_Underground_Mines.webm (WebM audio/video file, VP8/Vorbis, length 20 min 23 s, 640 × 480 pixels, 1.5 Mbps overall, file size: 218.67 MB)
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English: A video describing how to prevent rock fall injuries in underground mines. |
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| Source | YouTube – View/save archived versions on archive.org and archive.today |
| Author | National Institute for Occupational Safety and Health |
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This image is a work of the National Institute for Occupational Safety and Health, part of the Centers for Disease Control and Prevention in the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:56, 7 November 2016 | 20 min 23 s, 640 × 480 (218.67 MB) | James Hare (NIOSH) (talk | contribs) | c:User:Rillke/bigChunkedUpload.js: Higher quality version | |
| 00:36, 26 February 2016 | 20 min 23 s, 480 × 360 (44.25 MB) | James Hare (NIOSH) (talk | contribs) | User created page with UploadWizard |
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