Directly in charge in the administration and disposition of the country’s mineral lands
and mineral resources;

Undertake geoscientific surveys and researches in the fields of land and marine
geology, mining, mine environment, metallurgy, mineral economics, and mine
geodetic surveys;

Recommends to the Secretary the granting of Mineral Agreements and endorses
to the Secretary, for approval by the President, the granting of Financial or Technical
Assistance Agreements (FTAA);

Provide laboratory and other technical services to the public and other government
entities;

Provide technical assistance to local government units in their performance of
devolved functions on small-scale mining and quarry/sand and gravel mining
operations;

Provide staff support and technical advisory to the Office of the Secretary on mining
and geology matters; and

Acts as Secretariat to the Mines Adjudication Board (MAB).