Forecasting of LME (London Metal Exchange) nickel prices remains an interesting topic but lacks consensus. This study aims to fill knowledge gaps by demonstrating the announcement effect export bans Indonesian government. article focuses on Indonesia because produces more than 60% global ore. We identified sequence two episodes in which ore appeared increase prices. The impact ban 2014 is somew...

Chromite ore processing tailing, a solid waste generated during the of chromite ore, is difficult to recover due its ultra-fine size. The tailings from process contains valuable and iron-bearing minerals, loss which matter concern for ferrochrome industry worldwide. Tailings plant mainly dumped, causing space environmental concerns. Researchers worldwide have carried out rigorous study on recov...

Planning and design procedure of an open pit mining project just can be started after ultimate pit determination. In the carried out study in this paper it was shown that the most important factor in ultimate pit determination and in consequence in the whole planning and design procedure of an open pit mine is the metal price. Metal price fluctuations in recent years were exaggerated and impose...