Mining Library ...: Trumbull, L.W. A manual of underground surveying. [c1910
Meridian 64 Polaris a Solar attachment a Direct solar observation a Geographical solution a Bibliography. ... Chapter V. Secondary Openings, Survey of 119 Coal mines a Stopes narrow a Stope-books a String surveys a Estimate of values a Volumes ... Map Filing 160 Models a Erasures a Ink and colors a Blue-prints: Overexposed, to write upon, waterproofing of a Solution a Tracing fromanbsp;...
| Title | : | Mining Library ...: Trumbull, L.W. A manual of underground surveying. [c1910 |
| Author | : | |
| Publisher | : | - 1910 |
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