My folks visited and Dad burned some of our wood pile to make ash for the chickens, since we actually had an allowed burn day. I haven’t made ash in over a year because of time restraints and burn restrictions. As we shooed the spiders and geckos out of the iron cauldron I use as a fire pit, I noticed a large flake of rust fall off. I don’t want the chickens eating that, so when the ashes cooled, I used a fishing magnet to remove the metal.

I dredged the ash with a magnet four or five times before I was no longer collecting large flakes of iron.

There is still iron in the ash, but small enough grains that it shouldn’t cause hardware stomach in the chickens. Hardware stomach is where the farm animal eats wire or nails or some other metallic object, and the object damages the digestive tract, often leading to death.