VIVAnews - Indonesia is much benefited by the existence of millions of tons of mining materials such as coal, copper, gold, or lead.
Mimika and West Sumbawa are places of abundant reserve of gold.
Based on data of the Association of Indonesia Coal Mining, total coal production in Indonesia in 2009 reached 193.98 million tonnes.
The national coal production keeps increasing. In 2008, the national coal production was only 175.3 million tonnes compared to 2007 at 148.8 million tonnes. Of the the said amount, at least 150 million tonnes were exported.
East Kalimantan is the province having the highest coal production at 112.7 million tonnes; Kalimantan follows at 69.7 million tonnes; Bengkulu at 22.7 million tonnes; and South Sumatra, 11.4 million tonnes.
The top contractors in the coal mining business include PT Bumi Resources Tbk through PT Kaltim Prima Coal with 38.1 million tonnes of production in 2009 while PT Arutmin Indonesia was 19.29 million tonnes of production.
Furthermore, PT Adaro Indonesia produced 39.9 million tonnes; PT Kideco Jaya Agung, 24.9 million tonnes; PT Berau Coal, 14.3 million tonnes; PT Tambang Batubara Bukit Asam Tbk, 11.4 million tonnes.
Coal of best qualities can be found iin Cekungan Pasir (South Kalimantan), Cekungan Asam-asam (East Kalimantan), Kutai Atas (Central and East Kalimantan), and Cekungan Ombilin (West Sumatra). The coal mined from the area has a very minimum content of water at 9-10 percent.