Ralph GROUNDS et al., Appellants, v. NORTHERN NATURAE GAS COMPANY, a corporation, Northern Helex Company, a corporation, and Texaco, Inc., Appellees; Ralph GROUNDS et al., Appellants, v. NATIONAL HELIUM CORPORATION, a corporation, Appellee; O. W. HEGER et al., Appellants, v. CITIES SERVICE GAS COMPANY, a corporation, Appellee; Katherine R. ADAMS et al., Appellants, v. CITIES SERVICE GAS COMPANY, a corporation, Appellee; PAN AMERICAN PETROLEUM CORPORATION, a corporation, Appellant, v. CITIES SERVICE GAS COMPANY, a corporation, Appellee; Bloyd BURGESS et al., Appellants, v. CITIES SERVICE GAS COMPANY, a corporation, Appellee