D. Colorado August 1986 casesU.S. v. NortonU.S. v. Peter Kiewit Sons' Co.Behunin v. Dow Chemical Co.United States v. RogersWinslow v. LehrIn re BillingsContinental Cas. Co. v. BrummelNorthwest Cent. Pipeline v. Mesa PetroleumSimmons v. Prudential Ins. Co. of America