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Summary
| Description |
Roughnecks working on a drilling rig in Greeley, Colorado in 2008. |
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| Source |
.jpg) |
| Author | National Institute for Occupational Safety and Health |
Licensing
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This image is a work of the Centers for Disease Control and Prevention, part of 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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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:47, 7 August 2013 | | 1,024 × 768 (1.56 MB) | JZNIOSH | User created page with UploadWizard |
File usage
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