The Mound Plant in Miamisburg, Ohio, produced tritium for thermonuclear weapons and plutonium-238 power generators for NASA spacecraft—specialized Cold War work that contaminated southwestern Ohio communities with radiation they didn’t know they faced. Hayashi’s 1990 documentation examines environmental damage committed under governmental authority and national security justification.

From 1948 to 1994, this Department of Energy facility manufactured components for nuclear weapons and powered missions including Apollo, Viking, Voyager, and Cassini. Operations generated plutonium-238, tritium, and conventional hazardous chemical contamination. Workers and nearby residents faced exposure hidden under DOE classification protocols that prioritized weapons production schedules over public health disclosure. The governmental secrecy that prevented communities from accessing contamination information echoed patterns at Fernald and other nuclear weapons complex sites where national security imperatives superseded environmental transparency.

Mound Plant shares conceptual foundation with Hayashi’s Japanese American internment camp documentation. Both series chronicle landscapes where governmental power exercised for collective security imposed costs on civilian populations—imprisonment or radiation exposure—with affected communities lacking power to resist or even obtain information about harms they faced. The parallels between wartime incarceration and Cold War contamination reveal consistent governmental willingness to sacrifice vulnerable populations for national objectives.

The facility operated twenty miles from Fernald’s uranium processing operations. Together, these southwestern Ohio DOE sites created regional concentration of nuclear weapons production contamination affecting working-class communities economically dependent on facility employment yet politically powerless to demand environmental safeguards. The employment provided income and stability; the contamination provided cancer risks and cleanup burdens persisting decades beyond facility closures.

Mound’s cleanup completion in 2008 demonstrated comprehensive radiological remediation remains technically feasible. But remediation cost billions—far exceeding the facility’s economic value during production years. This cost accounting raises fundamental questions about nuclear deterrence’s true price when environmental cleanup expenses are included. The hidden environmental costs of weapons production remained largely invisible until post-Cold War Superfund assessments forced comprehensive accounting.