Exhibit 23(a) CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We hereby consent to the use in this Registration Statement on Form S-4 of our reports on the audits of the consolidated financial statements of Mid-Plains, Inc. and subsidiaries dated February 10, 1997 and to the reference to our Firm under the caption "Experts" in the Registration Statement. /s/ Kiesling Associates LLP KIESLING ASSOCIATES LLP Madison, Wisconsin February 21, 1997