Well for one, I had no heard of filings until buying in Deltona. I started looking for asphalt and concrete men. In the free magazine here called 'Penny Saver' that was an ad saying you could have a cheap driveway using Asphalt Filings. I called two men and got quotes. Then came hurricane Matthew.
The last quote was from Bobby Clifton. He told me they use rejected filings from DOT. OK, FILINGS! When you see road work you see a big machine like a hog, eating the old asphalt off the road. It is loaded onto an awaiting truck and taken to an asphalt factory. There it is ground and graded. If it meets DOT specs, it goes back into the new asphalt and put back on the roads.