Principles of mining : valuation, organization and administration; copper, gold, lead, silver, tin and zinc . COMPOSITION BY THE MAPLE PRESS COMPANY, YORK, AND BOIXND BY COMAC PRESS, INC., BROOKLYN, N. Y. PREFACE. This volume is a condensation of a series of lectures deliveredin part at Stanford and in part at Columbia Universities. It ismtended neither for those wholly ignorant of mining, nor forthose long experienced in the profession. The bulk of the material presented is the common heritageof the profession, and if any one may think there is insufficientreference to previous wri
Principles of mining : valuation, organization and administration; copper, gold, lead, silver, tin and zinc . COMPOSITION BY THE MAPLE PRESS COMPANY, YORK, AND BOIXND BY COMAC PRESS, INC., BROOKLYN, N. Y. PREFACE. This volume is a condensation of a series of lectures deliveredin part at Stanford and in part at Columbia Universities. It ismtended neither for those wholly ignorant of mining, nor forthose long experienced in the profession. The bulk of the material presented is the common heritageof the profession, and if any one may think there is insufficientreference to previous writers, let him endeavor to find to whomthe origin of our methods should be credited. The science hasgrown by small contribijflf^s 6t exj^ri^ice smce, ^oMore, thoseunnamed Egyptian en gJiJ^rfji, y/j] ngf^ wo^^iajQrj^estMen knowl-edge of many fundamenmlivjX mine engine^ng jffx thousandeight hundred years ago. VR3^\^v^jC(iiit9!X»Cte(/one sentenceto the accumulated knowleclga^\a th^ii^iijr generations ofengineers, or have thrown one^^^ iia}/Qf^ li^t on the work, Ishall have done my share. \, f a ^ j I therefprinciplesofmini00hoovuoft
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