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… . . . . . . . . . . . 1 2. Sources of mercury emissions to air and releases to water . . . . . . . . . . . . . . . . . . … a contribution to international efforts to reduce mercury pollution. This summary report and the accompanying Technical … metals (Cu, Pb, Zn, Al) Pig iron and steel Oil re�ning Stationary combustion (oil and gas) Stationary combustion …