Mining Library ...: Trumbull, L.W. A manual of underground surveying. [c1910

Mining Library ...: Trumbull, L.W. A manual of underground surveying. [c1910

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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
ISBN-13:

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