Coal Mining G. Hayes

ISBN: 9780747804345

Published: March 4th 2008


32 pages


Coal Mining  by  G. Hayes

Coal Mining by G. Hayes
March 4th 2008 | Paperback | PDF, EPUB, FB2, DjVu, talking book, mp3, ZIP | 32 pages | ISBN: 9780747804345 | 6.58 Mb

This book tells how mines evolved from simple bell pits into extensive networks of shafts and tunnels and extending deep underground.

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