(January 22, 2016, 1:46 PM EST) -- OWENSBORO, Ky. — Two experts are qualified to offer opinions on the design of underground mining equipment in a product liability lawsuit against Caterpillar Global Mining America LLC, a Kentucky federal judge ruled Jan. 21 (Beau Brooks and Tina Brooks v. Caterpillar Global Mining America, LLC, No. 14-00022, W.D. Ky.; 2016 U.S. Dist. LEXIS 6843)....