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Summary

Following the worst accident in U.S. commercial nuclear history at Three Mile Island in March 1979, a broad coalition of activists, labor unions, and public figures campaigned to permanently close the plant, repeal the Price-Anderson Act, and remove Energy Secretary James Schlesinger. Despite massive protests, a nonbinding referendum, and civil disobedience, the undamaged reactor TMI-1 was restarted in October 1985. Only the removal of Secretary Schlesinger was achieved, though the campaign’s influence on that outcome is uncertain.

Background

On 28 March 1979, the Three Mile Island Nuclear Generating Station suffered a partial meltdown that released radioactive gases, the worst accident in U.S. commercial nuclear history. The accident galvanized a growing anti-nuclear movement, which demanded the permanent closure of the plant, that stockholders bear cleanup costs, repeal of the Price-Anderson Act, and removal of Energy Secretary James Schlesinger.

What happened

Within days of the accident, activists held rallies across the U.S., including a march of 7,000 in San Francisco and 1,000 in Philadelphia. [source: nv-database] On 6 May 1979, between 65,000 and 125,000 protesters marched from the White House to the Capitol in the largest anti-nuclear demonstration in U.S. [source: nv-database] history. [source: nv-database] Three Mile Island Alert (TMIA), formed two years earlier, grew rapidly and organized a 2,000-person protest at Met Ed headquarters on 20 May, demanding permanent closure, repeal of Price-Anderson, removal of Schlesinger, and that stockholders pay costs. [source: nv-database] In mid-1979, the NRC delayed restart of the undamaged TMI-1 reactor. [source: nv-database] On the first anniversary, 7,000 rallied in Harrisburg and 56 were arrested at GPU headquarters. [source: nv-database] In 1981, labor unions sponsored a 10,000-strong ‘March on Harrisburg.’ On the third anniversary, activists burned $300,000 in unpaid electric bills to protest forcing customers to pay cleanup costs. [source: nv-database] In May 1982, a nonbinding referendum in three counties showed 40,000 opposed to restart versus 20,000 in favor. [source: nv-database] Despite this, the Pennsylvania Public Utility Commission approved using customer funds for cleanup in August 1982. [source: nv-database] In May 1985, the NRC voted 4-1 to lift the ban on TMI-1; 83 protesters were arrested at the plant gate. [source: nv-database] The U.S. [source: nv-database] Supreme Court authorized restart on 2 October 1985, and the reactor resumed operation the next day, remaining operational as of 2011 [source: nv-database].

Key people & organizations

  • Three Mile Island Alert
  • Union of Concerned Scientists
  • United Automobile Workers
  • International Association of Machinists and Aerospace Workers
  • United Mine Workers
  • International Longshoremen
  • United Food and Commercial Workers
  • National Education Association
  • Labor Committee for Safe Energy and Full Employment
  • Concerned Pennsylvanians United
  • American Friends Service Committee
  • Movement for a New Society
  • Jane Fonda
  • Ralph Nader
  • Tom Hayden
  • California Governor Edmund Brown
  • Pennsylvania Governor Dick Thornburgh
  • General Public Utilities Nuclear Corporation
  • Metropolitan Edison
  • Pennsylvania Electric Company
  • Jersey Central Power & Light

Tactics used

The campaign combined mass marches, rallies, and vigils with direct action such as sit-ins and destruction of own property (burning electric bills), alongside lobbying and a nonbinding referendum, to pressure utilities and regulators from multiple angles. [source: nv-database]

Outcome

Verdict: partial.

Of the four stated goals, only the removal of Energy Secretary James Schlesinger was achieved, though the campaign’s direct role is unclear. The plant’s undamaged reactor restarted in 1985, cleanup costs were passed to customers, and the Price-Anderson Act remained in effect. The campaign thus achieved partial success in raising public awareness and delaying restart, but failed to permanently close the plant or change federal law. [source: nv-database]

Lessons

  • A dramatic accident can rapidly mobilize a previously marginal group into a mass movement.
  • Nonbinding referendums can demonstrate public opposition but may be ignored by regulators if not backed by binding legal authority.
  • Coalitions with labor unions and national figures can amplify a local campaign’s reach and resources.

Sources

Disclaimer: Included as a teaching example of campaign craft, not as endorsement.

Sources & verification

  • nv-database — grounding: primary — license: link-only
  • Rewritten: 2026-06-25 via worker_casestudies_v2.py

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