File:Helping miners escape from a mining disaster.webm
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Size of this JPG preview of this WEBM file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,024 × 576 pixels | 1,280 × 720 pixels | 1,920 × 1,080 pixels.
Original file (WebM audio/video file, VP8/Vorbis, length 3 min 33 s, 1,920 × 1,080 pixels, 1.96 Mbps overall, file size: 49.61 MB)
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English: NIOSH researchers are testing escapeway markers to see which are the most visible in smoke. |
| Date | |
| Source | YouTube – View/save archived versions on archive.org and archive.today |
| Author | National Institute for Occupational Safety and Health, U.S. Centers for Disease Control and Prevention |
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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 | 00:01, 8 November 2016 | 3 min 33 s, 1,920 × 1,080 (49.61 MB) | James Hare (NIOSH) (talk | contribs) | User created page with UploadWizard |
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