1. Citizens By-Products Coal Company, a wholly-owned subsidiary of Citizens Gas & Coke Utility. Citizens Gas & Coke Utility is a Public Charitable Trust providing efficient and reliable energy services to more than 266,000 customers in and around Marion County, Indiana. The Public Charitable Trust means the utility is managed only for the benefit of customers and the community. Citizens Gas has operated natural gas storage and oil production operations in Greene County for more than 30 years. Additional information is available online at www.citizensgas.com.

2. ProLiance Transportation and Storage - Heartland, LLC, a wholly-owned subsidiary of ProLiance Transportation and Storage, LLC, which in turn is a wholly-owned subsidiary of ProLiance Energy, LLC. ProLiance Transportation and Storage, LLC ,  is an asset development and ownership company based in Indianapolis with natural gas pipeline and storage projects in the Midwest and Gulf Coast .