File:Drilling Roughnecks (8744524276).jpg
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![File:Drilling Roughnecks (8744524276).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Drilling_Roughnecks_%288744524276%29.jpg/800px-Drilling_Roughnecks_%288744524276%29.jpg?20150426211000)
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Categories:
- Petroleum workers
- Drilling rigs
- National Institute for Occupational Safety and Health photographs
- Greeley, Colorado
- People wearing hard hats in the United States
- Leaning men in the United States
- Men at work in Colorado
- Men at work in the 2000s
- Men wearing helmets in Colorado
- Men with hard hats
- People of the United States in 2008
- Standing men in Colorado
- 3 men in the United States
- 2008 in Colorado
- 2008 photographs of the United States