Certification of plans, etc.
48. The Executive shall, as soon as practicable after the making of this Order, submit one or more copies of the book of reference, the deposited sections, the land plans and the works plans to the Secretary of State for certification that they are, respectively, the book of reference, the deposited sections, the land plans and the works plans referred to in this Order; and a document so certified shall be admissible in any proceedings as evidence of the contents of the document of which it is a copy.