A machine consisting of: (1) a bottomless scraper bucket; (2) a two-drum hoist; (3) two long cables that attach to the front and rear of the scraper; (4) a movable tail block; (5) a short, guyed mast located behind a ground hopper or other delivery point; and (6) two sheave blocks mounted on the mast to guide the operating cables to the hoist. The tail block is shifted manually from time to time, swinging the scraper in a wide arc until all the material within the operating radius has been taken out.