✦ LIBER ✦
Mine Examination Questions and Answers Compiled from Examinations for Positions of Mine Inspector, Mine Foreman, Assistant Foreman, Fireboss, Hoisting Engineer, Safety Inspector and Shotfirer
- Book ID
- 109479967
- Publisher
- Nature Publishing Group
- Year
- 1923
- Tongue
- English
- Weight
- 138 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/112932a0
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