Today is the day that an ITD hearing officer will hear arguments from all sides on the proposed four mega-loads of oil refinery equipment that ConocoPhillips wants to send across U.S. Highway 12 in north-central Idaho. ITD's auditorium is quite full; among the crowd are more than 50 Conoco employees and supporters of the project who are wearing T-shirts touting it. The Billings, Mont. refinery employs 400 people, including about 100 contractors.