| |||
open cast mining; opencast mining; strip mining; surface mining | |||
opencast mining Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore; strip mining Superficial mining, in which the valuable rock is exposed by removal of overburden. Coal, numerous nonmetals and metalliferous ores (iron and copper) are worked in this way. Sinonym: strip mining, opencast mining, openpit mining |
dagbouw: 6 צירופים, 3 נושאים |
כללי | 1 |
מדעי החברה | 1 |
פֶּחָם | 4 |