Detailed overview
Text based but very well structured overview on heavy metals: definition, details about each heavy metal, therapy for poisening; source: life extension foundation

Global production of heavy metals
Short overview of the global production of heavy metals during the last 150 years
Source: World Resources Institute 

Overview - heavy metals
Text based overview on heavey metals, including ways of emission and effects
source: private industry

Harmful effects overview
Short overview of the harmful effect of various common heavy metals, text only
source: European Comm. 2002

Alternative-medicine-encyclopedia/heavy-metal-poisoning Poisoning and treatment
Text only summary of heavy metal poisoning and treatment

Overview and dosis Short overview and dosis information for heavy metals
Text only. Source: Lehigh Univ., Betlehem, PA

Heavy metal poisoning
Symptoms, diagnosis and treatment in key words