After wage agreement ends Swissport stoppage, strikers get fired December 2, 2015 NUM facing brick wall on non-renewal of Eskom's Arnot coal contract General Glencore could sell its troubled Optimum coal minePosted by admin Reuters reports that Glencore’s struggling Optimum colliery, which is currently embroiled in a dispute over the price of coal with power utility Eskom, could be sold off. Source: Latest News