gravel ballast
31Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
32Construction of the Trans-Alaska Pipeline System — The construction of the Trans Alaska Pipeline System was a massive undertaking involving tens of thousands of people often in extreme temperatures and conditions. Specialized construction techniques were pioneered to build the pipeline, most of… …
33Glossary of motorsport terms — The following is a glossary of terminology used in motorsport, along with explanations of their meanings. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V W …
34Railroad tie — While wooden ties dominate North American railways, concrete is widely used in other parts of the world. A railroad tie/railway tie (North America), or railway sleeper (Europe) is a rectangular item used to support the rails in railroad tracks.… …
35railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
36Rail transport — Railroad and Railway both redirect here. For other uses, see Railroad (disambiguation). Rail transport is the conveyance of passengers and goods by means of wheeled vehicles specially designed to run along railways or railroads. Rail transport is …
37Richmond-Kurrajong railway line, Sydney — The Kurrajong railway line was a railway line in the extreme western suburbs of Sydney, New South Wales, Australia. It was an extension of the branch off the Main Western line from Blacktown to Richmond and was operated by the New South Wales… …
38crushed rock — noun rock fragments and pebbles • Syn: ↑gravel • Derivationally related forms: ↑gravel (for: ↑gravel), ↑gravelly (for: ↑gravel) …
39Romney, Hythe and Dymchurch Railway — Romney, Hythe Dymchurch Railway Northern Chief at New Romney Overview Type Light railway Locale Ken …
40Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …
