The Tribes and Castes of the Central Provinces of India, Book II

"Agaria: A small Dravidian caste, who are an offshoot of the Gond tribe. The Agarias have adopted the profession of iron-smelting and form a separate caste. They numbered 9500 persons in 1911 and live on the Maikal range in the Mandla, Raipur and Bilaspur Districts. The name probably signifies a worker with ag or fire. An Agaria subcaste of Lohars also exists, many of whom are quite probably Gonds, but they are not included in the regular caste. Similar Dravidian castes of Agarias are to be found in Mirzapur and Bengal. The Agarias are quite distinct from the Agharia cultivating caste of the Uriya country..."