Abstract: The tool comprises an elongated bar adapted for mounting at its normally upper end in a ballast tamping machine of conventional construction, and a tamper foot demountably secured to the opposite, normally lower end of the bar, the particular improvement consisting of a demountable, locked, pressure-fitted, dovetail connection between the foot and bar.

Abstract: A snatch block having opposed side sections which may be swung open to admit a cable, rope or other towline into the interior of the block for engaging a sheave journaled for rotation between the side sections and which has an anchorage device such as a hook secured to one of the sections, the particular improvement being in the provision for ready interchangeability of the wide variety of anchorage devices which are required for specific applications.