Lead

• Health: Occupational Health and Safety: Hazardous Substances  (78)
• Science: Chemistry: Elements: Metals  (0)
• Science: Environment: Environmental Health: Toxic Substances: Lead  (20)

ChemGlobe: Lead - Electronic, thermal, and steric data along with an isotope table.

ChemicalElements.com: Lead - Basic information, atomic structure, and isotopes table.

EnvironmentalChemistry.com: Lead - Atomic structure, chemical and physical properties, and table of nuclides.

It's Elemental: Lead - Basic physical and historical information.

LANL: Lead - Properties, forms, uses, and handling.

Lenntech: Lead - Physical data, chemical properties, health and environmental effects.

USGS Minerals Information: Lead - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).

Visual Elements: Lead - Image, uses, physical information, and key isotopes.

WebElements: Lead - Extensive information on history, uses, occurrence, compounds, and properties.

Wikipedia: Lead - Properties of the element, including its history, applications, and characteristics.