File:The Story of Rock Drilling.webm
Jump to navigation
Jump to search
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 20 min 2 s, 1,920 × 1,080 pixels, 1.9 Mbps overall, file size: 271.9 MB)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]| Description |
English: The Story of Rock Drilling” is a historical film produced by the U.S. Bureau of Mines USBM) and released in 1921. The film shows advances in rock drilling techniques and technologies used in underground and surface mining in the early 20th century, including the application of these techniques to construction of watercourses used for power generation at Niagara Falls.
This film is being provided by NIOSH for historical interest. NIOSH assumed responsibility for the USBM health and safety research activities since 1996 and the historical products of the USBM continue to be of interest. As a historical film, it does not represent current health and safety practices or recommendations. |
| 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 |
Licensing
[edit]
|
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.
|
 |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:31, 30 November 2016 | 20 min 2 s, 1,920 × 1,080 (271.9 MB) | James Hare (NIOSH) (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.