A REVIEW OF INFRARED ZINC SULFIDE

Soils contaminated with zinc from mining, refining, or fertilizing with zinc-bearing sludge can have a number of grams of zinc per kilogram of dry soil. Levels of zinc in excessive of 500 ppm in soil interfere with the flexibility of plants to absorb other vital metals, including iron and manganese.Mining was unmechanized and labor-intense, with p