Just saw your post. You certainly could learn what you need, but just not only from textbooks. Being part of the safety team, I can assure you that you would need a firm grasp of the OSHA rules and regs relating to what is a recordable injury or illness (and the difference between the two) and what is not recordable. As a part of safety in a plant, that can end up being one of your central responsibilities, i.e. keeping the OSHA log, etc. (You can learn all that from the OSHA website, and a bit more reading specifically about what is compensable with workers compensation, and the difference between compensability and recordability.) The part you will need classes in is CAOHC audiometry and a NIOSH approved course in Spirometry. Both cost about 400.00 each, but you would be well advised to get that certification before applying, unless you already know they want you, and that they would be willing to pay for it. After that, you can focus on brushing up on first aid, AED, etc. if you need to, and it sounds like you have the skill set already for that. But, in providing first aid and emergency response (likely at a plant), you will need to be very aware the recordability issues-not that that should direct your care, but sometimes there are choices, and you need to make the right choices on treatment. Also, you will want to know if there is a company physician, and who will write the protocols for the clinic, and will you have input into that. GOOD LUCK, and I wish you the best in your quest!