The cover story this month is about the difficulties of introducing a new foaming rock-dust product to the underground coal market. Many moons ago, I used to spread rock dust on the graveyard shift. It is a thankless job, but it’s a task that must be performed daily, and all miners understand that. Ironically, when underground coal miners see black, they see danger. The way light is reflected by the whiteness of a recently dusted face imbues a safe working environment.
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