The Occupational Safety and Health Administration has released information on how BP limits the exposure of its offshore oil-spill workers to dangerous chemicals found in oil dispersants after concerns arose that they may be vulnerable to long-term health problems. According to OSHA, the highest level of exposure among BP's sampled workers was recorded at 0.8 parts per million, compared with the 5.0 ppm limit set by the National Institute for Occupational Safety and Health.

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