The board of trustees of a weather modification district shall conduct the affairs of the district. The board of trustees shall certify a budget to the board of county commissioners to fund the operations of the district. The budget preparation, hearings and approval shall be the same as required for any county budget. The certification of the budget to the board of county commissioners shall be as required for other taxing districts. The board of county commissioners may levy annually upon all taxable property in the weather modification district, a tax not to exceed four (4) mills, to be collected and paid into the county treasury and apportioned to a fund to be designated the "weather modification" fund, which is hereby created. Such fund shall be used by the district for the gathering of information upon, aiding in or conducting programs for weather control or modification, and such activities related to weather modification programs as are necessary to insure the full benefit of such programs. Moneys in the fund may be paid out only on order of the board of trustees.