Metadata
Author: WikiMatrix
Data
English[en]
Operating in a "room and pillar" (also known as "bord and pillar") system—where the mine is divided into a series of 20-to-30-foot (5–10 m) "rooms" or work areas cut into the coalbed—it can mine as much as 14 tons of coal a minute, more than a non-mechanised mine of the 1920s would produce in an entire day.
Spanish[es]
Operando en un sistema “cámara y pilar”—donde la mina se divide en series de “cámaras” de 20-a-30 pies (5-10 metros) o áreas de trabajo cortadas en camas de carbón—puede extraer 5 toneladas de carbón por minuto por mucho, más de lo que una mina sin mecanizar de los 1920s podía producir en un día completo.