Manganese Investments in Sarai Neglect the Governance of Local Governments: http://www.victorynews.id/investasi-mangan-di-sarai-abaikan-tata-hubungan-pemda/18/18 December 2017
The practice of manganese mining investment by PT Cromindo Lestari Nusantara in Sabu Liae Subdistrict, Sabu Raijua Regency, East Nusa Tenggara has now neglected the inter-governmental inter-governmental arrangement, ie coordination between the Government of East Nusa Tenggara Province and Sarai Regency Government.

According to the regulation, the authority to give permission manganese mining exploitation is transferred to the Provincial Government. However, there should be coordination with Sarai Regency Government as the owner of the mining area and whose communities feel the direct impact of the mining investment.

Manganese Mining Investment Opportunities in Kupang district : http://beritadaerah.co.id/2015/07/29/peluang-investasi-penambangan-mangan-di-kabupaten-kupang-berlimpah/29 July 2015
Natural resources of minerals Manganese is one of the mining products which have a sizeable utility. These commodities included in the group of twelve earth's crust which is used as raw material for the steel industry.

Two forms of minerals Manganese Ferro Manganese and Silico Manganese is widely used for industries of steel. In addition, the manganese can be used for the production of dry batteries, ceramics, glass, and chemicals.

BKPM NTT Province on its website wrote most of the world production of manganese (90%) is absorbed by the steel industry. One is a manganese-producing areas of East Nusa Tenggara ranging from Flores and West Timor has a manganese mining products with quality levels of manganese (Mn) in the top 44% to 70%. The manganese content is classified as the best in the world, NTT also has manganese deposits are scattered in various locations.