1.) Mine and plant
The Marampa licence is located 120km from Freetown on the outskirts of the town of Lunsar. The 28km2 licence area comprises a mine, power plant and processing plant. The plant is being expanded to 6.5Mwmt/a from a current installed capacity of 5.4Mwmt/a.
2.) Haul road
The mine is connected to the Thofeyim river terminal by a 40km haul road for which London Mining has dedicated commercial use. Concentrate is transported by a fleet of 80t trucks under a contract with Bollore. Capacity can be increased by the addition of trucks.
The Thofeyim river port and stockyard is located on tidewater and operates year round in both the wet and dry seasons. Iron ore concentrate is unloaded from haul trucks into the stockpile which has a capacity of 300,000t. It is then loaded on to barges by conveyor.
Iron ore concentrate is barged 50km to the Freetown harbour in a fleet of barges manoeuvred by tugs with a capacity of 7Mwmt/a with the potential to increase to 10Mwmt/a.
5.) Transhipment operations
73 ships where loaded in the first two years of operations. Iron ore concentrate is transferred from barges to ocean-going vessels (OGV) using either the OGV’s own loading gear or using one of London Mining’s vessels. London Mining employs two transhipment vessels with a combined loading rate of 35kt/day.
We started production at our Marampa mine in December 2011. Marampa was formerly operated by the Sierra Leone Development Company and William Baird between 1933 and 1975. It reached a peak production of 2.5Mtpa in the 1960s before low iron ore prices forced its closure. Continuing weak market economics, outdated processing technology and civil war prevented redevelopment of the mine for over 30 years, until we acquired the mining licence in 2006.