It shall be the duty of the authority to give notice in writing of the filing of the map or maps and statement and the loan agreement provided for in Sections 77-5-501 and 77-5-503 to each electric utility and power and light company having any electric transmission or distribution lines or system within or within ten (10) miles of any area shown in said maps where said filing corporation intends to operate its proposed system. There shall be attached to said notice blueprint copies of said maps, a copy of said statement, and a copy of the notice of said loan agreement in the event that such an agreement shall have been entered into. Sufficient copies for the purpose of such notices shall be furnished to the authority by and at the expense of the filing corporation. The filing corporation may give the notices required by said sections and such notices shall be effectual for the purposes of this article, notwithstanding any failure of the authority to give the notices herein provided for. Any notice shall be deemed to have been given within the requirements of this article when it has been deposited in the mails with postage prepaid and addressed to the principal office of any such electric utility, power and light company, person or corporation.