underground working उदाहरण वाक्य

उदाहरण वाक्य

1. "' Fire-setting "'is a method of traditional mining used most commonly from underground workings without adequate ventilation.
2. A adit was cut in the 1890s, which provided natural drainage for much of the underground workings.
3. This did not prevent Queen Victoria visiting the underground workings on an 1846 visit to Polperro . }}
4. Surface quarries were also opened; they outlasted the underground workings and were last used in the early 1920s.
5. Shortly after their arrival, Pineiro was engrossed in the pro-Castro underground working to overthrow the dictator Fulgencio Batista.
6. The project includes an open pit, underground workings, historic support facilities, a new concentrator and recently constructed tailings facility.
7. Such methods could be very effective in opencast mining, but fire-setting was very dangerous when used in underground workings.
8. There are many ancient open pit and underground workings that show that this area has been mined in the past.
9. He lived on Oak Island for a summer and possessed firsthand knowledge of the underground workings through his own observations.
10. At its peak, during World War I, Westville boasted three underground workings; the Black Diamond, the Acadia, and the Drummond.