Why Mesothelioma Cases Occur in Delaware
Despite its small geographic size, Delaware has a disproportionately significant asbestos exposure history. The state's industrial identity was shaped by the chemical industry — particularly DuPont, which was headquartered in Wilmington and operated manufacturing facilities throughout the state — along with automobile assembly plants, oil refineries, and power generation facilities. Each of these industries used asbestos-containing materials extensively from the 1940s through the 1980s, exposing thousands of Delaware workers to deadly fibers.
According to WikiMesothelioma.com, Delaware's concentration of chemical manufacturing and heavy industry in the Wilmington corridor and along the Delaware River created asbestos exposure conditions that affected workers across multiple sectors. The state's auto assembly plants — operated by General Motors and Chrysler — added another significant exposure pathway, as asbestos was used in vehicle brake linings, clutch facings, gaskets, and plant insulation.
Oil refineries along the Delaware River contributed additional asbestos exposure. These facilities used asbestos insulation on boilers, piping systems, and heat exchangers, exposing refinery workers and maintenance crews to concentrated asbestos fibers during routine operations and turnaround maintenance periods.
The 20-to-50-Year Latency Period
Mesothelioma does not appear immediately after asbestos exposure. The disease has a latency period of 20 to 50 years, meaning workers exposed at Delaware's chemical plants, auto assembly facilities, and refineries during the 1950s through the 1980s are being diagnosed now. A maintenance worker who handled asbestos insulation at a DuPont facility in Wilmington in 1970 may only receive a mesothelioma diagnosis in 2025 or later. This long latency period is why Delaware continues to produce new mesothelioma cases decades after asbestos use was curtailed.
Delaware's position in the Mid-Atlantic industrial corridor also means that many workers held jobs at multiple facilities over the course of a career, or commuted between Delaware, Pennsylvania, and New Jersey industrial sites. This multi-site exposure history is important for legal claims because it can connect a patient to multiple asbestos trust funds and multiple defendants, increasing the total compensation available.
Delaware's Asbestos Legacy
Delaware's industrial density relative to its size means that asbestos exposure was remarkably concentrated. The Wilmington area alone hosted DuPont's corporate headquarters and manufacturing operations, GM and Chrysler assembly plants, and supporting industries — all using asbestos-containing materials. Delmarva Power's generating stations and oil refineries along the Delaware River added further exposure sources. If you worked at any chemical plant, auto assembly facility, refinery, or power plant in Delaware, documenting your asbestos exposure history is a critical first step toward understanding your legal options.