It can be used as fertilizer for your garden to improve the potash component of the soil.
Fireplace ash is generated as a natural byproduct of burning wood. Especially with a long burning fire with several large logs, you can be left with a large quantity of ash in your fireplace. For cleanliness and safety, it's important to remove the buildup of fireplace ash. You can do something as simple as having an ash bucket next to your fireplace to scoop out the extra ashes periodically. Another option is to have an ash vacuum to clean out all the ashes. I'll share a link to a nice ash bucket and fireplace vacuum below.
Ash
fireplace
Ash buckets are used to store ashes in when a fireplace is being cleaned. They are tall and thin and can reduce the amount of dust that hits the air when moving the ashes. Ash buckets are also used for grills and barbeque's when charcoal breaks down.
A furnace or fireplace or the ash dump box.
Ash, and possibly charcoal
An ashdump door is a an opening through which the ash is removed from a fireplace.
coal left from the wood or if you just use wood ash.
Yes very safe
It would be the fireplace less used. Gas log fireplaces don't produce ash or sut, and there is no killing of trees.
a cast iron, hinged opening to the ash bin.
It is the ash dump. It allows you to clean the ashes out of the fireplace without having to put them in a bucket and carry them outside. Much more clean.