Explanatory notes
… road making, for packing rail‑road ballast, etc. (but see paragraph (a) of the introduction to Explanatory Note to … directly from the end of a boom or jib (shovel excavators, drag shovels, etc.) or, to increase the working range, on a … or by means of a hydraulic jack suspended from the jib (draglines). In long range excavators (slackline draglines), …