Keywords: US-ChemicalSafetyBoard-Logo.svg Logo of the United States Chemical Safety and Hazard Investigation Board Extracted from PDF version of a CSB http //www csb gov/index cfm folder news_releases page news NEWS_ID 277 Incident Screening Process report direct PDF URL http //www chemsafety gov/news_releases/docs/CSBIncidentScreeningReport pdf with internal bitmaps replaced with gradients U S Government Public domain from a copyright standpoint but trademark-like restrictions apply <gallery>Image US-ChemicalSafetyBoard-Seal svg Seal</gallery> PD-USGov insignia Independent agencies of the United States government |