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Coal miner stickers started out as little advertisements that the manufacturers of mining equipment handed out. Even before the late 1960s, when mining safety laws started requiring reflective materials underground, miners used those stickers to stay visible to each other in the dark mines.
Coal Hogs Work Safe
By TEDCoal miner stickers started out as little advertisements that the manufacturers of mining equipment handed out. Even before the late 1960s, when mining safety laws started requiring reflective materials underground, miners used those stickers to stay visible to each other in the dark mines.
Coal Hogs Work Safe