Upon the filing of such petition, or upon the adoption of a resolution declaring the intent of the board of supervisors to incorporate such district, it shall then be the duty of the board of supervisors of such county to fix a time and place for a public hearing upon the question of the public convenience and necessity of the incorporation of the proposed district solely for fire protection grading purposes. The date fixed for such hearing shall be not more than thirty (30) days after the filing of the petition, and the date of the hearing, the place at which it shall be held, the proposed boundaries of the district and the purpose of the hearing shall be set forth in a notice to be signed by the clerk of the board of supervisors of such county. Such notice shall be published in a newspaper having general circulation within such proposed district once a week for at least three (3) consecutive weeks before the date of such hearing. The first such publication shall be made not less than twenty-one (21) days before the date of such hearing and the last such publication shall be made not more than fourteen (14) days before the date of such hearing.

If, at such public hearing, the board of supervisors finds that the public convenience and necessity require the creation of the fire protection grading district to enable the Mississippi State Rating Bureau to grade the district according to its fire insurance grading schedule, the board of supervisors shall adopt a resolution making such findings and declaring its intention to create the district on a date to be specified in such resolution. Such resolution shall also designate the name of the proposed district and define its territorial limits, which shall be fixed by the board in accordance with such hearing.