Figure 2From: Use of a geographic information system to track smelter-related lead exposures in children: North Lake Macquarie, Australia, 1991–2002Gridded and imaged 1992 soil lead concentration in the suburbs surrounding the Cockle Creek lead-zinc smelter, North Lake Macquarie, NSW, Australia. Navy: soil lead < 150 ppm, Turquoise: 150 ppm – < 300 ppm, Green: 300 ppm – < 1000 ppm, Orange: 1000 ppm – <4000 ppm, Red: ≥ 4000 ppmBack to article page