Describe lead exposure in industry

Please watch the Catalyst TV program “Lead astray”

http://www.abc.net.au/catalyst/stories/4174798.htm

Describe potential sources of lead exposure in chemical industry. Outline the likely population health impacts of lead exposure (who is most likely to be affected? and how would we know?). (max 300 words)

Describe the steps would you take in conducting an environmental health risk assessment of lead exposure in the child care centre? (max 400 words)

For the purposes of this tutorial, the centre is in an old house (built about 1910) extended for the purpose and sited near what is now a busy main road, in an inner (former industrial) area with a significant indigenous community. 

Word length: about 500 words (no more than 700)

You can cite references (perhaps 1-3)