Regarding ZincI'm in the construction industry and every type of metal we use must be "corrosion resistant." That means that the metal must be galvanized or electrogalvanized to meet this code - ZINC is used in this coating process. I'm in Colorado which sells $millions of nails and various pieces of galvanized metal details everyday, without a catastrophe. Now, just imagine the rebuild of the LA and MS Gulf region - they will literally need tons and tons of corrosion resistant metals, which are ZINC coated!!!! You can do the math!!!!