The West Coast Regional Council is considering a complete ban on burning coal in coal town Reefton, as it addresses air pollution in the township.
Coal was discovered in the area in 1869, and even now the Terrace Mine burrows right under the edge of town, opposite a residential street.
But the air quality has breached national standards twice this winter, the worst year since records began eight years ago. Twice, it was more than double the limit.
The council held a workshop last week to work through the problem, and plans to hold a public meeting in Reefton.
Chief executive Chris Ingle said a ban on burning coal was on option, as the council favoured moving to wood-burners.