Knoxville, TNExecutive Assistant at Miller Petroleum I worked as an assistant to a Certified Public Accountant for 12 years and still work with him on a part-time basis. Currently I work for Miller Petroleum Inc... I worked as an assistant to a Certified Public Accountant for 12 years and still work with him on a part-time basis. Currently I work for Miller Petroleum Inc. as the assistant to the CEO and as a bookkeeper.