Talk:Ballast tamper
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[edit] Reference sources
The following may be useful for referencing or expanding the article:
- Mini ballast tamper - stand-alone unit for use by P-Way crews for spot sleeper replacement, etc. Useful pics + description of relative benefits.
- Postcard showing 1969 tamper in US
- Plasser & Theurer patent
- Another patent
Plenty more available - these were from the first Google page! (NB - this page was 2nd in the list...)
EdJogg 13:10, 18 September 2007 (UTC)