Qualified employees should have welding experience in aluminum or stainless, (willing to be trained, we may be able to assist) be able to work from blue-print drawings, read tape measure, have good math and verbal communication skills, and experience working with hand tools, etc. Polar Tank Trailer, LLC, the largest over-the-road tank trailer manufacturer in the United States, is now accepting applications for Production employees at our Opole, MN location.