William W. Ballard

Ballard Petroleum Holdings LLC engages in the acquisition, development, production, and exploration of oil and natural gas reserves primarily in the Rocky Mountain States. The firm owns leasehold, development, and exploration opportunities and maintains production operations in the following states: Wyoming, Montana, and North Dakota. The company was founded in 1991 and is headquartered in Billings, MT.

Montana Petroleum Association, Inc. is a non-profit organization which engages in the exploration, production, operation, marketing, and refinement of oil and gas. It represent three sectors of the petroleum industry: Upstream, Midstream, and Downstream. The organization is headquartered in Helena, MT.

Billings Clinic provides health care services. It offers audiology, immunology, assited living, clinical services, emergency services, eye center, obstetrics and gynecology, oncology, ophthalmology, occupational medicine, and neurology. The company was founded in 1911 and is headquartered in Billings, MT.