Breaks up slag, using sledgehammer.
Loads slag into water-filled tank, using hoist.
Agitates solution to dissolve zinc chloride from slag, using airhose. Determines specific gravity and acidity of solution, using hydrometer and chemical reagents. Pumps impurities from solution through filters. Samples solution and observes its color to determine need for additional reagents and agitation. Pumps treated solution to tank cars or drums.