A VARIETY of factors have combined to further reduce the volumes of smelter acid entering the system, but there is every sign that the sulphuric acid market will continue to deteriorate, with negative prices now heard around the world, and high fertilizer inventories keeping buying interest low among fertilizer producers. There are even rumours of long-term sulphuric acid contracts being fixed on a $0/mt delivered basis, although these have not been confirmed. Xstrata Copper has decided to follow the lead of
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