Liberia, June 5 -- Ahead of the formal commissioning of a new 20 million tonne capacity concentrator, the President of Liberia, His Excellency Joseph Boakai, and ArcelorMittal Executive Chairman, Mr. Lakshmi Mittal, today attended an inauguration event held at the site of the concentrator in Tokadeh, Nimba County.Coming soon after ArcelorMittal celebrated 20 years of mining in Liberia, the new state-of-the-art concentrator is one of the largest iron ore beneficiation plants in Africa. It is the central component of ArcelorMittal's US$1.8 billion expansion project in Liberia - bringing ArcelorMittal's total investment in Liberia to date to approximately US$3 billion - which will see production increase from current levels of 5 million tonnes...