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Let’s talk railcars and ballast. #practicalengineering #engineeringlif — @practicalengineering

25.4K3:18@practicalengineering

TikTok’s STEM feed is now available in more regions! 🌏 #FeatureFeature — @tiktoknewsroom

3.2K1:38@tiktoknewsroom

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#stemtok #ballast #tieexchanger #didyouknowthis #trainsoftiktok #featurefeature #railcars #adayinthelifeof