Manila Mining Corporation (then East Mindanao Mining Corporation) located in Placer, Surigao del Norte started operation as an underground mine with a mill capacity of 100 tons per day (TPD) employing gold concentrator table and drum filter. This was later expanded to 200 TPD shortly before World War II. Aug 24, 2021 Manila Mining Corp. (MMC) on Monday said it would resume its exploration drilling in its mining tenements in Placer, Surigao del Norte following the discovery of Ntina Deeps, a gold-rich porphyry ... Sep 27, 2017 An example of a small-scale mining tunnel in Surigao del Norte. Contributed photo. Surigao del Norte Gov. Sol Matugas has ordered the Provincial Environment Management Office (PEMO) to strictly monitor and make assessment of all small scale mining operations s within the province following the deaths of three pocket miners in Placer town last