At Kiunga, the concentrate is filtered, dried and stockpiled awaiting transport. Dried concentrate is loaded onto barges and transported more than 800 kilometres down the Fly River to a silo vessel anchored at the entrance to the Fly River delta or at Port Moresby, depending on weather conditions.
The barges are purpose-built for the shallow conditions of the Fly River. The largest vessel has a capacity of 6,200 tonnes. Concentrate barges carry freight to Kiunga on their return trip.
The moored silo vessel; the 43,000 deadweight tonne MV Kumul Arrow, stores concentrate until it is loaded onto export ships that carry it to smelters around the world.
Kiunga port on the Fly River is the main point for the despatch and receipt of goods and materials which are required for the operation of OTML. About 100 million Litres of fuel per annum; 10,000 various cargo including heavy equipment/year and ~300,000 Litres of hauled fuel to Tabubil each day
In addition to processing Copper Concentrate and OTML critical cargo movement, Kiunga Operations also provides support to the local community by; supplying power, water, sewage, cable TV services, supply of security and fire fighting support to the township of Kiunga.