30th. MAY, 2001 (iii) any soil investigation works; or (iv) such other works as are usually undertaken by a person carrying on business as a contractor in the construction industry or as a professional civil or structural engineer; (b) any act of boring, dredging, jacking, leveling, piling or tunneling on or under any premises or street by any mechanical means; and (c) the driving or sinking of any earth rod, casing or tube into the ground; "equipment" includes any appliance, apparatus or accessory used or intended to be used for telecommunication purposes; "Hertzian or radio waves" mean electro-magnetic waves of frequencies not exceeding 1,000 terahertz propagated in space without any artificial guide; "installation or plant used for telecommunications" includes all buildings, lands, structures, machinery, equipment, cables, poles and lines used or intended for use in connection with telecommunications; "JTB" means the Telecommunications Department of the Government existing immediately before the commencement of the Authority for Info-communications Technology Industry of Brunei Darussalam Order, 2001; "message" means any sign, signal, writing, image, sound, intelligence or information of any nature transmitted by telecommunications; "Minister" means the Minister responsible for telecommunication matters; "public telecommunication licensee" means a person designated by the Authority under section 6; "public telecommunication licensee’s installation or plant" means any installation or plant used for telecommunications belonging to or used by a public telecommunication licensee; "radio-communication" means any telecommunication by means of Hertzian or radio waves; "radio-communication service" means any service for radio-communications; "radio-communication system" means any system used or intended to be used for radiocommunications; "repealed Act" means the Telecommunication Act (Chapter 54) repealed by this Order; 1141