This course package will provide the following knowledge to learners.

• Basic knowledge of Arsenic, Benzene, Hydrogen Sulfide, and Mercury.
•  Routes of exposure
•  Health effect
•  Safe work precautions
•  Protection of Arsenic, Benzene, Hydrogen Sulfide, and Mercury.
•  Monitoring and detection
•  Contaminated waste management for Arsenic, Benzene, Hydrogen Sulfide, and Mercury.