Kementerian Perindustrian
Astri Mining Resources, PT Jl. Pesantren Rt. V No. 2, Kampung Baru Kec. Simpang Empat, Tanah Bumbu, Kalimantan Selatan Telp. 051871133: Other Coal,whether Or Not Pulverised But Not Agglo: Other coal,whether or not pulverised but not agglo: 904. Astron Optindo Industries Jl. Petak Baru No. 58, Jakarta Barat, DKI Jakarta Telp.