1.Do some research on the internet and determine the status of industrial hygiene and occupational safety and health prior to about 1900. What were some of the earlier efforts to address these issues?

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1.Do some research on the internet and determine the status of industrial hygiene and occupational safety and health prior to about 1900. What were some of the earlier efforts to address these issues?

1.Do some research on the internet and determine the status of industrial hygiene and occupational safety and health prior to about 1900. What were some of the earlier efforts to address these issues? 2.Describe atomic absorption spectroscopy and gas chromatograph mass spectrometry and what they are used for?