How is line mined? | ReferenceLine is surface mined through open pit quarries or hillside cuts, or horizontally by tunneling under the overlaying surface rock. Quarrying is the most.how are line quarries mined,Environmental Hazards of Line Mining | Education - Seattle PILine quarries can be above ground or underground, and can cover large areas. Environmental hazards from mining operations depend in part on the.
how are line quarries mined