Beneficial Economical, Coastal Society of Kalianda Collecting Pumice Stone: https://www.cendananews.com/2017/04/bermanfaat-ekonomis-masyarakat-pesisir-pantai-kalianda-kumpulkan-batu-apung.html/24 April 2017
Being in the coastal area overlooking the Sunda Strait and Mount Anak Krakatau makes the residents are familiar with pumice stone. Since it has economic value, people start collecting and selling it to collectors.

One local resident said, other than as a cosmetic tool there are also using this pumice stone for wall decoration in the park at the same time make an attractive fish pond. Currently, the price per sack of pumice stone predicted averaging 10 kilograms, sold at Rp.25 thousand per sack. Pumice stone is also often purchased by tourists who want to use it as a decoration for the path that is in the garden home as well as a therapeutic tool.

In addition, in some household uses, pumice stone can be used to clean cooking utensils such as frying pans, pans and other cooking utensils, especially for those that are difficult to clean with soap.

National Businessman interest to Potential Kolaka : http://skalanews.com/berita/detail/167451/Pengusaha-Nasional-Lirik-Potensi-Karbon-Kolaka/12 February 2014
PT. Trans Java, Sulawesi joined in a consortium of six national employers glance mining potential carbon in Sub Samaturu, Kolaka, Southeast Sulawesi.

In developing a slate factory carbon emitters that, the company needs a total area of approximately 10,000 hectares with an investment of around 10 million to 20 million US dollars.

Potential carbon emitters slate was sprawling on be some villages in the district Samaturu like Tamboli village, Muara Tamboli and village levels Konaweeha by 4-15 percent.