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I remember the first time I walked a maintenance yard and saw a floating slab retrofit being installed — a lot of steel, springs and hopeful engineering. 

You know, in the world of construction and everyday household items, there are these little components that quietly do the heavy lifting, often unnoticed until they fail. 

If you work in rail maintenance, you know stray current is one of those invisible pests — eating at rails, signaling gear and civil assets.