The department of revenue of this state shall have supervision of and jurisdiction over escheat property and may institute and prosecute any proceedings, including any proceeding under chapter
11.62 RCW, deemed necessary or proper in the handling of such property, and it shall be the duty of the department of revenue to protect and conserve escheat property for the benefit of the permanent common school fund of the state until such property or the proceeds thereof have been forwarded to the state treasurer or the department of natural resources as hereinafter provided.