Williston Basin Interstate Pipeline Company provides a broad range of natural gas services that includes transportation, storage and gathering along with a full spectrum of energy-related administrative services including measurement, pipeline construction and maintenance.

These services are offered to a variety of customers such as utilities, natural gas production companies, energy marketing firms and large industrial consumers.

Storage working gas capacity of approximately 193 billion cubic feet provides customers with enhanced daily and seasonal deliverability and greater ability to access best-cost natural gas supplies throughout the year.

Williston Basin is part of the WBI Holdings family of companies which are all indirect wholly owned subsidiaries of MDU Resources Group (NYSE: MDU).  MDU Resources is a Fortune 500 company and a member of the S&P MidCap 400 index providing value-added natural resource products and related services and operates with three core lines of business: utility resources, energy, and construction materials. WBI Holdings comprises the energy business line for MDU Resources.