See:
- Levy, Thomas E.; Bettilyon, Megan; Burton, Margie M. (2016-10-31). "The Iron Age copper industrial complex: A preliminary study of the role of ground stone tools at Khirbat en-Nahas, Jordan". Journal of Lithic Studies. 3 (3): pp. 313–335. https://books.google.com/books?id=h2mRDwAAQBAJ&pg=PA89
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Excavations at Khirbat en-Nahas, 2002–2009: An Iron Age Copper Production Center in the Lowlands of Edom [Pp. 89-245 in New Insights into the Iron Age Archaeology of Edom, Southern Jordan (2014)] Erez Ben-Yosef, Thomas E Levy, Aaron D Gidding. https://www.academia.edu/32347760/Excavations_at_Khirbat_en_Nahas_2002_2009_An_Iron_Age_Copper_Production_Center_in_the_Lowlands_of_Edom_Pp_89_245_in_New_Insights_into_the_Iron_Age_Archaeology_of_Edom_Southern_Jordan_2014_
- https://en.wikipedia.org/wiki/Khirbat_en-Nahas