“Bahr ul-asrar” by Mahmud ibn Wali is a work that provides information about the famous metal mines and metallurgy in the 17th century

this article examines the information collected by Mahmud Ibn Vali, the librarian of the Bukhara Khan's library in the 17th century, about his knowledge of metalworking in the encyclopedic work “Bahrul Asror”. The information was prepared based on a Persian translation from a manuscript century text. Valuable information is provided about the experience and traditions of the peoples of Central Asia in making strong iron and steel, and about the deposits of metal and other minerals.