| Subject | English | Portuguese |
| gen. | Agreement on the Resolution of Practical Problems with respect to Deep Seabed Mining Areas | Acordo sobre a Resolução de Problemas Práticos relativos às Áreas Mineiras dos Grandes Fundos Marinhos |
| coal. | deep mining | exploração subterrânea |
| environ. | deep sea mining | indústria mineira oceânica |
| environ. | deep sea mining | extração mineira marítima |
| environ. | deep sea mining The most valuable of the marine mineral resources is petroleum. About 15% of the world's oil is produced offshore, and extraction capabilities are advancing. One of the largest environmental impacts of deep sea mining are discharged sediment plumes which disperse with ocean currents and thus may negatively influence the marine ecosystem. Coal deposits known as extensions of land deposits , are mined under the sea floor in Japan and England | extracção mineira marítima |