Aurizon Holdings Ltd. (Aurizon) is an Australia-based rail freight operator. The Company acts as a heavy haul freight railway operator; rail transporter of coal from mine to port for export markets; engages in bulk general and containerized freight businesses, and rail services activities. Its segments include Network, Commercial & Marketing, Operations and Other. The Network segment provides access to, operation and management of the Central Queensland Coal Rail Network. It also provides overhaul and maintenance of rail network assets. The Commercial & Marketing segment is engaged in commercial negotiation of sales contracts and customer relationship management. The Operations segment is engaged in the national delivery of coal, iron ore, bulk and intermodal haulage services. It also includes yard operations, fleet maintenance, operations, engineering and technology, engineering program delivery and safety, health and environment. It also maintains rolling stock fleet assets.