Mountain bell. Rates Public Utilities Commission orders rate hike for business-phone units in Mountain Bell System. Post Ap 16, 1978 p.4E Most business phone rates to go down. Post Ap 30, 1978 p.7G Colorado Supreme Court orders uniform state pay-phone rates; other DECISIONS concerning rates. RMN F 6, 1979 p.5 Post F 5, 1979 p.3