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. 2018 Sep 19;133(6):700–706. doi: 10.1177/0033354918795442

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Figure. — Distribution of blood lead level (BLL) measurements (n = 172) for 77 employees at a lead oxide manufacturing facility in North Carolina in relation to regulatory and health-based thresholds, 2012-2016. Each dot represents the maximum BLL for a single employee for that year; some employees have a BLL in more than 1 year. Abbreviations: ABLES, Adult Blood Lead Epidemiology and Surveillance; CSTE, Council of State and Territorial Epidemiologists; NIOSH, National Institute for Occupational Safety and Health; OSHA, Occupational Safety and Health Administration.