page_title: Namtu
section_title: Geology
hierarchical_section_title: Namtu / Geology
caption_attribution_description: English: Namtu Bawdin mine cross section
context_page_description: Namtu is a town situated in northern Shan State, Myanmar. It is famous for Bawdwin and Namtu silver mines. NamTu River is flowing across in the middle of town and the transportation from Namtu to Lashio or Namtu to Mandalay is by bus.
context_section_description: In 1904, Herbert Hoover, representing Bewick, Moreing and Company, visited the mines upon the urging of A.C. Martin.  Martin was building the railway from Mandalay to Lashio and owned the lease.  Hoover arranged capital to develop the mines and agreed to invest some of his own savings in what he called "the largest chance of my life."  The capital was also used to link the mines via rail to the main line and erect a smelter in Mandalay to melt the slags.  The initial promise of financial return from the abandoned copper-lead mine was in the enormous lead left behind in the surface slag.  The mines had been worked by the Chinese from 1400 until 1850, mainly for silver.  However, after separating the silver via cupellation, the lead was left behind.  The Chinese left "hundreds of dumps and tunnels, extending over nearly three miles."  One open was a thousand feet long, five hundred feet wide, and three hundred feet deep.  Lead production began in 1908, the same year Hoover became managing director of Burma Mines.  The "Chinaman Tunnel" was completed in 1910.  Hoover became chairman of the board in 1914.  The two mile long "Tiger Tunnel" gained access to "one of the largest and richest lead-zinc-silver ore bodies ever discovered."  Production of that ore started in 1916 after the construction of mills and hydroelectric plants.
  In 1911, the smelter was moved to Namtu and monthly lead production was 1000 tons and 22,000 ounces of silver.  Total production from 1909 through Oct. 1915 was 66,000 tons of lead and 1,432,000 ounces of silver from 158,000 tons of slag and 35,000 tons of ore.
  In 2018, ASX listed Myanmar Metals bought out a majority 51% participating interest in the Bawdwin Project in joint venture with its two local project partners, Win Myint Mo Industries Co. Ltd. (WMM) and EAP Global Co. Ltd. (EAP) who each hold 25% of the Bawdwin mine. PFS done in 2019 resulted in Phase 1 of mining operations at Bawdwin, a 13 year Starter Pit, will set Bawdwin up to be a world leading producer of lead and silver as well as a significant zinc producer. In steady state production, Bawdwin’s Starter Pit would be the 3rd largest-producing lead mine in the world, the 10th largest-producing silver mine in the world, as well as being a globally significant zinc producer. 
  Updated resource estimates on 08 August 2019 returned indicated and Inferred Mineral Resource estimate rises to 100.6Mt at 4.0% Pb, 3.1 Oz/t (97 g/t) Ag, 1.9% Zn and 0.2% Cu.
caption: Namtu Bawdin mine cross section
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