Iron ore fell to a decade low on Tuesday amid a global glut that showed no signs of abating as softer futures suggested further weakness. The commodity is down by nearly half this year. As part of the cost cuts, Kumba transformed Kolomela mine from three pits into two but did not cut production targets. In South Africa, mining firms are under pressure from rising costs and falling prices, forcing companies to close shafts and cut capital expenditure and jobs to survive. This has angered unions, which have opposed the layoffs.