An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a first end and a second end. Blackening treated iron or iron-based alloy is used as a material of a heat sink 11 having a one-dimensional CCD element 14 mounted thereon. In a further aspect, an integer representing a token points to an array of tokens that can be activated by the token. The route presentation also may be user-controllable such that a user may control the portions of a route that are printed. One such cleaning path follows each of the insert rollers in the peeling section of a peeling machine. The puller member is axially slidable relative to the outer sleeve by rotation of the actuating bolt which mates with a threaded hole in the puller member, and is prevented from rotating relative to the outer sleeve during travel relative to the sleeve.