All the beaches have black iron sand, that can be extracted by using a magnet.
Tamahagane is made of iron sand (called satetsu in Japanese).
There are 2 main types of iron sands: acome and masa.
The iron sand is put in a clay tub (furnace) called a tatara.
The iron sand is added every 10 minutes and the mixture is frequently turned over.
Silver scrap and iron sand spewed into the night.
At that point he will direct the addition of iron sand known as satetsu.
This will be layered in with more charcoal and more iron sand over the next 72 hours.
The area is rich in iron sand and there are remains of a large tatara.
Another iron ore used was iron sand (such as red soil).