Home > Term: rail track ballast
Material placed around and between track ties and tamped under sides and ends of the ties to bring the track to proper grade by filling the space between the bottom of the ties and the graded roadbed.
- Μέρος του λόγου: noun
- Κλάδος/Τομέας: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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Δημιουργός
- ed.young
- 100% positive feedback
(Milwaukee, United States)