Zinc Corporation of America (ZCA) is the largest zinc producerin the United States and the world's foremost manufacturer ofvalue-added zinc products including zinc oxide, zinc dust, andzinc powder. ZCA is an integratedzinc producer as well as theworld's largest producer of zincfrom recycled sources. ZCA'spyrometallurgical facility, the onlyone of its type in the WesternHemisphere, provides unique capabilities to utilize a full range of zinc feeds in its zinc refining process.ZCA's operations con...