Wyoming Medical Center has signed a letter of intent with Banner Health, the first step in a potential future affiliation deal between Wyoming’s largest hospital and one of the most significant health care organizations in the region. The agreement is nonbinding, according to an announcement sent Tuesday by WMC, and allows both organizations to “conduct mutual due diligence and for the opportunity to fully determine the specific terms of a potential affiliation before any final decisions are made.” The potential deal apparently will not mean a merger. Banner Health is a nonprofit health care giant that runs nearly 30 hospitals across the West, including three in Wyoming. In addition to traditional hospitals, Banner operates labs, emergency rooms, clinics and surgical centers. In 2017, it reported $6.4 billion in revenue and $672 million in net income, according to federal tax records. In that same year, Banner listed $5.8 billion in assets.