Who are the listeners of this short talk?

Welcome to TM Productions. My name is Kevin Moore, the human resources director. I am very happy to have all of you as part of our workforce. Before we go around the premises, there are some company regulations that I must inform you about. When entering the area where our auto parts are produced, hardhats, safety goggles, and work boots must all be worn. Second, in the event of an accident, you must report it to the floor assembly supervisor immediately. When we finish the tour of the production area, Mr. Miller, our operations manager, will come by to answer any questions you may have about our company. Now, follow me everyone.
Number 89.Who are the listeners of this short talk?
Number 90.What department does the speaker work in?
Number 91.What does TM Productions make?