“The initial group comprised 90 lead workers from a secondary lead smeltery, all of whom had experienced long-term exposure to lead.”
“Similar findings with respect to basal hormone concentrations were reported by Gustafson et al. in a previous study of lead workers from the present smeltery.”
“Potential hyper-accumulation of Pb, Zn, Cu and Cd in endurant plants distributed in an old smeltery, northeast China.”
“Little is known of the details of these practices, but their existence is confirmed by early documents that mention taxation of first and second smeltings.”