(June 28, 2016, 2:40 PM EDT) -- SAN FRANCISCO — Chevron Corp., which is being sued by plaintiffs who allege that the company is liable for damages related to the explosion of one its natural gas rigs in Nigeria, on June 24 filed a brief in a California federal court asking it to compel the plaintiffs to produce litigation funding documents to demonstrate the adequacy of the class representative and his counsel (Foster Ogola, et al. v. Chevron Corporation, No. 14-173, N.D. Calif.)....