Odd Language #71: Lead Astray

In Orson Scott Card’s story “The Monkeys Thought ‘Twas All in Fun” has a character who is forced to become a miner and “… he was not untalented or utterly unbright, so he was trained as a lead miner.”

The issue: “lead” as in the metal or as in “leading”? You might think the former, but it was actually the latter. He was a lead coal miner.