The board of supervisors of each county electing to be a part of this council is authorized to set aside, appropriate and expend moneys from the general fund for the purpose of securing funds with which to support and maintain said council. Prior to the board of supervisors securing an indebtedness of the council under this chapter, the board shall comply with the provisions of Section 19-9-11. Provided, however, any tax levied previously under Section 19-9-111 by any county may be collected and paid to the council created hereby if such tax has not already been paid to the appropriate industrial council. Provided further, that the board of supervisors of any such participating county may, by appropriate order, designate a specific portion of the sum of its appropriation, not to exceed the revenue derived from three-fourths (3/4) of one (1) mill, to be used by said council exclusively for industrial development of said county in any manner authorized by this chapter. The council is hereby authorized to receive and expend funds from the boards of supervisors of participating counties provided by taxation as aforesaid, together with any gifts, gratuities and donations from municipalities within any participating county and from any persons, firms or corporations desiring to make such donations. Such appropriations, gifts or donations shall be placed in such depository as the council may deem appropriate. Any funds designated by any county board of supervisors or the governing body of a municipality for exclusive use within said county shall not be commingled with any other funds, but shall be kept and expended separately.