The outgoing chairperson of diversified miner Rio Tinto, Jan du Plessis, has reaffirmed that the company is working with authorities on regulatory investigations relating to its operations in Guinea and Mozambique.
The US Securities Exchange is conducting an investigation relating to the impairment included in the 2012 accounts over the Rio Tinto Coal Mozambique (RTCM) operations. RTCM was acquired in 2011 and sold in 2014.
