More than a dozen top U.S. energy companies have pledged $100 million toward easing stresses on health care, education and civic infrastructure from the shale oil and gas boom in West Texas and New Mexico, the group said on Sunday.  Chevron, EOG Resources, Exxon Mobil and Royal Dutch Shell are among 17 companies backing the Permian Strategic Partnership, as the consortium is called, Don Evans, a former U.S. government official and energy executive helping launch the group, told Reuters on Saturday. The group seeks to address labor and housing shortages, overtaxed health care and traffic congestion caused in part by companies descending on the Permian Basin, the nation’s largest oilfield, where they hope to pump billions of dollars’ […]