Quimbee logo
DMCA.com Protection Status
From our private database of 18,300+ case briefs...

In Re Hanford Nuclear Reservation Litigation Phillips v. E.I. Dupont De Nemours & Co.

United States Court of Appeals for the Ninth Circuit
534 F.3d 986 (2008)


During World War II, the United States built the Hanford Nuclear Weapons Reservation (Hanford) in Washington for the production of plutonium. The government contracted with E.I. Dupont de Nemours Co. (Dupont) (defendant) to operate the facility. Plutonium production emitted a fission byproduct called 1-131, or radioiodine. 1-131 was known to be dangerous to health, and the government issued recommendations for exposure. These recommendations were not legally binding. Many years later, research showed that 1-131 could cause thyroid-related diseases, such as thyroid cancer and hypothyroidism. In 1988, congress enacted the Price-Anderson Act (the act), placing all claims relating to nuclear incidents under federal jurisdiction, and allowing plaintiffs to sue private parties, such as government contractors. Plaintiffs who believed they had been injured by 1-131 emitted from Hanford filed multiple class-action suits against Dupont and other defendants. They alleged that Dupont was strictly liable for their injuries because Dupont was engaged in an abnormally dangerous activity. These cases were consolidated, and ultimately 12 plaintiffs were chosen to proceed with a “bellwether” case to determine the strengths and weaknesses of the litigation. Half of these plaintiffs’ suits were dismissed. The remaining six went to trial. Before the trial, Dupont argued that the common-law affirmative defense of contractor immunity was a complete defense to liability. The trial court held that the act preempted this defense. The trial court instructed the jury that the plaintiffs must prove that Hanford’s 1-131 emissions were a cause-in-fact of their injuries. A jury found in favor of two plaintiffs, awarding them damages of nearly $550,000 collectively. The non-prevailing plaintiffs and the defendants appealed. On appeal, the plaintiffs argued that the correct standard of proof was substantial causation, rather than but-for causation. Dupont argued that the district court erred when it held that contractor-immunity did not give Dupont a complete defense against the plaintiffs’ claims. Additionally, Dupont argued that it was not engaged in an abnormally dangerous activity because it did not fully know the dangers of plutonium byproducts at the time it operated Hanford.

Rule of Law


Holding and Reasoning (Schroeder, J.)

What to do next…

  1. Unlock this case brief with a free (no-commitment) trial membership of Quimbee.

    You’ll be in good company: Quimbee is one of the most widely used and trusted sites for law students, serving more than 487,000 law students since 2011. Some law schools—such as Yale, Vanderbilt, Berkeley, and the University of Illinois—even subscribe directly to Quimbee for all their law students. Read our student testimonials.

  2. Learn more about Quimbee’s unique (and proven) approach to achieving great grades at law school.

    Quimbee is a company hell-bent on one thing: helping you get an “A” in every course you take in law school, so you can graduate at the top of your class and get a high-paying law job. We’re not just a study aid for law students; we’re the study aid for law students. Read more about Quimbee.

Here's why 487,000 law students have relied on our case briefs:

  • Written by law professors and practitioners, not other law students. 18,300 briefs, keyed to 985 casebooks. Top-notch customer support.
  • The right amount of information, includes the facts, issues, rule of law, holding and reasoning, and any concurrences and dissents.
  • Access in your classes, works on your mobile and tablet. Massive library of related video lessons and high quality multiple-choice questions.
  • Easy to use, uniform format for every case brief. Written in plain English, not in legalese. Our briefs summarize and simplify; they don’t just repeat the court’s language.

Questions & Answers

Have a question about this case?

Sign up for a free 7-day trial and ask it

Sign up for a FREE 7-day trial