CONE Midstream Partners LP owns, operates, develops, and acquires natural gas gathering and other midstream energy assets in the Marcellus Shale in Pennsylvania and West Virginia. It operates its business through three segments: Anchor Systems, Growth Systems and Additional Systems. The Anchor Systems segment includes three primary midstream systems such as, the McQuay System, the Majorsville System and the Mamont System and related assets. The Growth Systems segment is primarily located in the dry gas regions of its acreage that are generally in earlier phases of development. The Additional Systems segment includes several gathering systems primarily located in the wet gas regions of its acreage. The company was founded on May 30, 2014 and is headquartered in Canonsburg, PA.