% of extraction- board & pillar mining- part I скачать в хорошем качестве

% of extraction- board & pillar mining- part I

here in this video we have discussed the numericals on PERCENTAGE OF EXTRACTION in Board and Pillar Mining. Bord and pillar mining method comprises two phases i.e DEVELOPMENT and DEPILLARING. Sometimes both these phases proceeds simultaneously. In development, pillars are formed by driving a network of galleries, of which one set is generally parallel to the dip and the other set is parallel to the strike cutting the former at right angles. Bord and pillar mining method comprises two phases i.e DEVELOPMENT and DEPILLARING. Sometimes both these phases proceeds simultaneously. In development, pillars are formed by driving a network of galleries, of which one set is generally parallel to the dip and the other set is parallel to the strike cutting the former at right angles. ↙️For Coaching classes on mining : WhatsApp us on 7070395566 click here to join our telegram Group: https://t.me/Mining_Technical Music Provided By NCS ➡️ Title:- Alan Walker -Force[NCS Release] ➡️ Video link :-    • Видео   ➡️ Artist Credits:- Alan Walker ➞ SoundCloud   / alanwalkermusic   ➞ Facebook   / alanwalkermusic   ➞ Twitter   / iamalanwalker   ➞ Instagram   / alanwalkermusic   Mining Technical is India’s largest mining Youtube channel which works on mining related subjects and news. #mining_technical