| zinc and lead poisoning in wild birds in the tri-state mining district (oklahoma, kansas, and missouri). | the tri-state mining district (oklahoma, kansas, and missouri) is contaminated with pb, cd, and zn from mining, milling and smelting. metals have been dispersed heterogeneously throughout the district in the form of milled mine waste ("chat"), as flotation tailings and from smelters as aerial deposition or slag. this study was conducted to determine if the habitat has been contaminated to the extent that the assessment populations of wild birds are exposed to toxic concentrations of metals. amer ... | 2005 | 15657812 |