Eiger Express Pipeline to Provide Natural Gas Transportation Solution for Growing Permian Basin ProductionTULSA, Okla., Aug. 25, 2025 /PRNewswire/ -- ONEOK, Inc. (NYSE: OKE), WhiteWater, MPLX LP (NYSE: MPLX) and Enbridge Inc. (NYSE: ENB), through the existing Matterhorn joint venture (Matterhorn JV), announced a new