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Consider your current workplace or a workplace with which you are familiar. Of the three primary routes of exposure (inhalation, dermal, ingestion), which route do you believe is the most important for controlling exposures to health hazards? Give an example of a health hazard in the workplace, and explain why you believe the exposure route you chose is important for that health hazard.

(Note: By a hazard in the workplace , we mean a chemical hazard, so name the chemical. Also, name the process the chemical will be working in. Then determine the various routes of potential exposure. You may also comment on the target organ or systemic effects).

Assume that your input will be an informed opinion so expect to see in-text citations and reference sources used (as you would for any academic writing) unless you are the expert who wrote the article or book on the subject. Even then, it is a good idea to provide resources for the reader to be aware of-Dr.B.

Please include the name of the person or question to which you are replying in the subject line. For example, “Tom’s response to Susan’s comment.”


One thing that jumps right out at me is when my tile guys do large commercial projects. There are two hazards that jump out to me. One is that they stack tiles in what could be considered walk ways and the major hazard is that they use a material called Mastic to seal the tile to the floor. Per Merriam Webster dictionary, Mastic is one of any various pasty materials used as protective coatings or cements in the placing of ceramic tile or other materials. This chemical could be either exposed through dermal, coming in contact with the skin when the tiler is putting down the tile if they try to cut safety corners and not wear gloves or they can enter the body through Inhalation because they are working so close to the tile and their face is right near the chemical while the work in being performed.

The mastic does give off a smell in which vapors are being put in the air at a small level but over time could be dangerous to the tiler if they do not wear proper PPE. P4 Introduction to Industrial Hygiene state’s that Powders or dusts in the work environment can also be a form of exposure when they come in contact with the skin. This would also be the case with tiling as there are dust particles even after the job is done that must be swept up during the cleaning process that could enter through mouth Injestion.