Mealey's ( July 8, 2021, 2:08 PM EDT) -- ALBUQUERQUE, N.M. — An oil company on July 6 filed a brief in New Mexico federal court contending that it should disallow a hydraulic fracturing operator’s expert causation witness because the operator is belatedly seeking to designate a new expert after the court deadline has passed and is “not entitled to a mulligan on an issue that has been in play since the outset.”...