Trap Rock Railway Ballast
Dense, angular 1.5-3 inch trap rock specifically for heavy-duty railway ballast applications. Exceptional hardness and angularity prevent track settlement. HTS 2517.10.00.15 explicitly includes gravel for railway ballast.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If natural slate for lightweight rail ballast
Slate ballast classifies under separate slate heading despite rail use.
If iron ore-bearing trap rock waste
Ore content >35% moves to Chapter 26 metal ores.
If general construction crushed trap rock
Railway-specific vs general construction use affects statistical suffix.
Not sure which classification is right?
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Import Tips & Compliance
• AREMA ballast specifications certification with LA Abrasion <15% required
• Magnesium sulfate soundness testing documentation essential
• Distinguish from general construction gravel by rail-specific gradation
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