Excerpt from Electric Mine Signalling Installations: A Practical Treatise on the Fitting-Up and Maintenance of Electrical Signalling Apparatus in Mines
In preparing this volume, the author has endeavoured to carry out two objects, viz., to illustrate and describe such apparatus which, as the result of experience, has been found to give the best results in practical mining work, and further to indicate, by the aid of plans and diagrams, the most approved methods of installing the apparatus and maintaining the same in working order.
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781333922603
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