PT. Apriadi Bersaudara (AB) is a company that holds a coal mining concession situated in Samboja, Kutai Kartanegara Regency, East Kalimantan Province.

AB’s production capacity varies from 30,000 to 50,000 metric tons per month, with a calorie content ranging within the GAR range of 4,200 to 4,000 Kcal/kg.

AB possesses its jetty and stockpile area for coal handling and loading onto barges. The jetty is located in Mentawir, Balikpapan, East Kalimantan, and is managed by MESA.