This report was compiled by the NIOSH Oil and Gas Safety and Health Program using the NIOSH Fatalities in Oil and Gas Extraction (FOG) database. FOG is a new internal system that collects detailed information about land-based and offshore oil and gas extraction fatalities in the U.S. It is used to inform NIOSH, industry, and other stakeholder groups, and guide interventions that will prevent future loss of life in this industry.Suggested citation: NIOSH [2015]. Oil and gas extraction worker fatalities, 2014 mid-year report. By Retzer K, Ridl S, Hill R. Denver, CO: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2015-...