OKLAHOMA CITY - Property damage diminution of value claims based on stigma or threatened harm by plaintiffs in consolidated actions seeking to represent a class of Duncan, Okla., residents for alleged groundwater contamination by fugitive perchlorate from a rocket engine maintenance facility were dismissed March 31 in the U.S. District Court for the Western District of Oklahoma (Mitchell McCormick, et al. v. Halliburton Co., et al., No. 11-1272, W.D. Okla.; 2014 U.S. Dist. LEXIS 44348).