2018 01 03 a

Barangay Lucsoon, Naval, Biliran

2018 01 03 b

Barangay Iyusan, Almeria, Biliran

2018 01 03 c

Barangay Cabibihan, Caibiran


Photos taken during the conduct of MGB-8 Post Geohazard Assessment in the landslide affected areas of Biliran Island

The Mines and Geosciences Bureau Regional Office 8 (MGB-8) refutes claims that open pit mining in the island of Biliran is to be blamed for the landslides during the onslaught of Tropical Depression Urduja.


            In the Post Geohazard Assessment conducted in Biliran on December 28, 2017, and contrary to published news articles in the December 19, 2017 issue of “Remate”, December 26, 2017 issue of the “Philippine Daily Inquirer” and December 30, 2017 issue of the “Manila Times”, it was determined by the MGB-8 Geologists that it was not mining but rather other factors were identified to have contributed to the occurrence of the landslides as follows:

  1. Intensely weathered, fractured and altered volcanic rocks with clayey materials underlying the areas;
  2. Continuous heavy rainfall brought about by Typhoon Urduja which loosened the topsoil with boulders and uprooted the trees;
  3. Slope gradients of approximately more than 45% which is considered Very High based on established MGB Landslide Susceptibility Rating parameter;
  4. Presence of points of weaknesses along roadcuts, riverbank portions and sloping mountainous areas; and
  5. Unstable grounds due to road development, farming and poor drainage systems.

            Also, in the said assessment, MGB-8 Geologists have not come across any ongoing or remnants of previous open pit mining/quarrying activity within the vicinities of the landslide areas that may have contributed to such occurrence of landslides. The landslides, however, mostly occurred on vegetated areas where coconuts and fruit bearing trees are present.


            This Office also emphasizes the fact that it has no record of any Permit for Mining issued within Biliran Province.