Simplot Company Supervisor In A Chemical Plant interview questions

Initial call from HR followed by a face to face. All that was asked were situational questions in your past. Over the course of a 20 year career it's hard to answer so many of that type of question in a real substantive way. I came prepared for those questions but not for the entire interview. It was a panel interview of 4 people and all they gave were first names not titles. It lasted about 40 mins