1. The Andiron dogs or billet bars keep the flaming logs in the firebox of the fireplace as they burn and settle

2. One-piece utility outfits first appeared in the mid 1800s, as ‘Boilersuits’ for crawling into the firebox of coal-burning steam vessels for cleaning, where a gap between jacket and pants could catch on the tight hatch of the ‘firehole’ (where coal is shoveled into the burner)