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Standard Number > 1926 > 1926.53
- 1926.53 - Exposure to radon when working in trenches or excavations. [12/28/2009]
- 1926.53 - Ionizing radiation hazards in the workplace [09/27/1990]
- 1926.53 - Maintenance of radiation exposure records NRC licensee contractors. [02/23/1998]