The Mines and Geosciences Bureau shall be the primary government agency under the Department of Environment and Natural Resources (DENR) responsible for the sustainable exploration, development, utilization and conservation of all mineral resources in public and private lands within the territory and exclusive economic zone of the Republic of the Philippines. Toward this end and in accordance with DENR policies and plans, it shall be primarily responsible for the rational administration and disposition of mineral lands and resources, development of mining, geological, metallurgical, chemical and related technologies thru basic and applied researches, and inventory of mineral resources. Office of The Regional Director - The Regional Director shall implement the pertinent laws, policies, rules and regulations; implement the Bureau's programs in the region; exercise the management functions of planning, organizing, directing and controlling; and perform such other duties and functions as may be provided by law or further delegated by the Director.

           In particular, the Office of the Regional Director shall take charge of mineral lands administration and geosciences services; provide staff services on planning, mineral economics, community development in relation to mining activities, information/education/communication campaign and legal matters; and render staff and technical support to the Panel of Arbitrators and the Provincial/City Mining Regulatory Board. This Office shall exercise supervision over the following Divisions: Administrative and Finance Division, Mine Management Division, Mining Environment and Safety Division and Geosciences Division. Mine Management Division - The Mine Management Division shall undertake processing/initial evaluation of mining rights applications and manage the issuance of mining rights and operations in mining tenements; take charge of the operationalization of the mineral rights management system and provide technical services to other Government agencies, mining contractors/permittees and the general public. Mining Environment and Safety - The Mining Environment and Safety Division shall be responsible for the enforcement and monitoring of compliance with the environmental and safety provisions of Republic Act No. 7942 and its Implementing Rules and Regulations pertaining but not limited to the Environmental Work Program, Annual Environmental Protection and Enhancement Program, Mine Decommissioning Plan, Mine Waste and Safety and Health Program. Geosciences Division - The Geosciences Division shall conduct geological, geoenvironmental and mineral exploration surveys; complement the Mine Management Division in the evaluation of mining rights applications; and provide geological and geo-scientific information and geotechnical services to other Government agencies, mining contractors/permittees and the general public. Administrative & Finance Division - The Administrative and Finance Division shall provide general administrative services pertaining to human resource management, records, property and other forms of support to operations; and render budgeting, cashiering and accounting services. Mission The MGB, as steward of the country's mineral resources, is committed to the promotion of sustainable mineral resources development, aware of its contribution to national economic growth and countryside community development.

           It fully recognizes that the development of a responsive policy framework in partnership with stakeholders to govern mineral exploration, mining and investment decisions and an effective institutional structure, are fundamental requisites for the sustainable utilization of the country's mineral resources. It is adherent to the promotion of geological studies as an integral element of socio-economic development, environmental protection and human safety. Yet, it is sensitive to the known environmental impacts of mining and the need for restoration and rehabilitation of mining affected areas and the development and adoption of environmental and geoscientific technologies. Vision MGB envisions a minerals industry that is not only prosperous but also socially, economically and environmentally sustainable, with broad community and political support while positively and progressively assisting in government's program on poverty alleviation and contributing to the general economic well-being of the nation. MGB also aims to be the leading geoscience and geo resources Bureau serving the public and nation with scientific reliability. Thrust To realize its vision for the industry, MGB subscribes to the core requirements of Sustainable Development as applied to mining and geoscience: Protection and rehabilitation of the environment; • Promotion of social and community stability; • Preservation of options for future generations; and • Competitive and prosperous mining industry.