After ten minutes of burning, a few small flames flickered in both fire lays, going out at the same time. The remaining beds of coals, however, were quite different. The teepee coal bed was a nice, round pile, while the cabin lay was a spread-out square of thinner coals. Two thumb thick sticks on the cabin's upwind perimeter did not burn; all of the teepee sticks were consumed. The coals continued burning for many minutes afterward in both fire lays, but 30 minutes after starting this test, the log cabin coals were dead. At 32 minutes, I still had enough coals in the teepee pile to rekindle the fire, which I did.