Lamotta McMahan et al. v. Olin Corporation et al.

McMahan · United States District Court for the Eastern District of Tennessee · April 6, 2026 · No. 1:24-cv-96

Summary

The United States District Court for the Eastern District of Tennessee addresses Plaintiffs’ motion for leave to file a fourth amended complaint in litigation concerning alleged mercury exposure at chemical facilities in Bradley County, Tennessee. The court grants the motion in part and denies it in part, including by finding that proposed negligence claims against several contractor defendants plausibly allege duty and breach and are not futile at the pleading stage. The opinion also discusses amendment standards under Federal Rule of Civil Procedure 15, pleading standards under Rules 8, 9(b), and 12(b)(6), and the distinction between misfeasance and nonfeasance under Tennessee law.

Holdings

  1. The proposed negligence amendments were not futile. Plaintiffs plausibly alleged that Bilfinger, Turner, White, and Custom Mechanical owed duties of care to specified categories of plaintiffs, breached those duties, and proximately caused alleged mercury-related injuries.
  2. The proposed fraudulent-concealment claims against the contractor defendants were futile because plaintiffs did not plausibly allege a fiduciary, confidential, or other relationship that imposed a duty on the contractors to disclose the dangers of mercury exposure.
  3. Despite plaintiffs' multiple prior amendments, an additional amendment was warranted because of the complexity and magnitude of the case, the prior dismissals without prejudice, the prompt filing of the motion, and the absence of demonstrated prejudice. Further substantive amendments, however, would generally not be allowed absent extraordinary circumstances.

Questions Presented

  1. Whether plaintiffs should be granted leave to amend negligence claims against Bilfinger, Turner, White, and Custom Mechanical where the proposed complaint alleged specific work activities, mercury-related risks, duty, breach, and causation.
  2. Whether the proposed fraudulent-concealment claims against the contractor defendants were futile because plaintiffs failed to plausibly allege a relationship creating a duty to disclose.
  3. Whether repeated prior amendments and the complexity of the litigation warranted denying further leave to amend.

Disposition

other

Cases Cited (40)

  • Thurman v. Pfizer, Inc., 484 F.3d 855, 859 (6th Cir. 2007)(followed)
  • Pittman v. Experian Information Solutions, Inc., 901 F.3d 619, 640 (6th Cir. 2018)(followed)
  • Foman v. Davis, 371 U.S. 178, 182 (1962)(followed)
  • Grand Traverse Band of Ottawa & Chippewa Indians v. Blue Cross Blue Shield of Michigan, 146 F.4th 496, 515 (6th Cir. 2025)(followed)
  • Greer v. Strange Honey Farm, LLC, 114 F.4th 605, 617 (6th Cir. 2024)(followed)
  • Iqbal, 556 U.S. 662, 678-79 (2009)(followed)
  • Papasan v. Allain, 478 U.S. 265, 286 (1986)(followed)
  • Bell Atlantic Corp. v. Twombly, 550 U.S. 544, 556, 570 (2007)(followed)
  • Sanderson v. HCA-The Healthcare Co., 447 F.3d 873, 877 (6th Cir. 2006)(followed)
  • Chesbrough v. VPA, P.C., 655 F.3d 461, 467 (6th Cir. 2011)(followed)

Showing top 10 of 40.

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