Mining company Outokumpu dumped 450 cubic meters of pig slurry into the waste water near the closed Kangasjarvi mine, which once produced zinc, copper and sulfur.
One evening, a friend of mine, a French photographer, watched as a rescue crew pulled a sulfur-factory worker from the ruins of a five-story workers’ club in a nearby town.
A review is made of the practice of technical transformation of copper sulfur flotation technology from bulk flotation into stage selective flotation and then iso flotation in Yongping copper Mine.