

An edition of An Elementary Class-book of Practical Coal-mining (1904)
By Thomas Hansom Cockin
Publish Date
1904
Publisher
-
Language
-
Pages
-
Description:
Book digitized by Google from the library of the University of California and uploaded to the Internet Archive by user tpb.
subjects: coal, pressure, feet, shaft, inches, rope, weight, seams, air, seam, square inch, cubic foot, compressed air, total pressure, winding engines, carbonic acid, square foot, tail rope, full corves, winding engine