Network Operators (Rail) : Those operators with a railway network of 40 route kilometres or more. Tranz Rail and the Taieri Gorge Railway are the only such operators in New Zealand.
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}