After reviewing Safety Data Sheets (SDS) and conducting an initial inspection of the areas at Acme Automotive Parts (AAP), you identify the following health hazards that you want to further evaluate: 

manganese fume (hand welding); 
copper fume (hand welding); 
lead fume (hand welding); 
1,2,4 trimethylbenzene (paint booth); 
toluene (paint booth); and 
xylene (paint booth). 

Choose one of the compounds from the hand-welding operation and one of the compounds from the paint booth operation. Search the Internet, and find the following data concerning the two compounds you chose; LC50, IDLH, vapor pressure, vapor density, target organs, mutagenicity, carcinogenicity, and reproductive toxicity. (Hint: many of the variables can be found on SDS that can be accessed on the Internet). 
Write one paragraph on each of the compounds explaining what the data tell you about the most likely exposure route and risk associated with each compound. 
Your assignment must be a minimum of two pages in length, not including title or reference pages. Your assignment must use at least two references. One must be gathered from the CSU Online Library; the other may be your textbook. All references and in-text citations must be formatted according to APA standards.