An assessment of metal recycling worker lead exposure associated with cutting uncoated new steel scrap.

摘要

Scrap metal can generally be categorized as new or old. Junked cars and demolished bridge beams are examples of old scrap; new scrap is generated during product manufacturing processes. For example, when steel mills fabricate stock into bars, rods, plates, or sheets, new steel scrap is generated as cuttings, trimmings, and off-specification materials. Additional new scrap is generated as the material moves through a series of manufacturing and finishing processes to become a final product. New and old steel scrap is usually recycled separately at metal recycling facilities because it is sold at different prices and may go to different smelting facilities.