A Text-book of Ore and Stone MiningGriffin, 1897 - 744 Seiten |
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... GOLD . By T. K. ROSE , Assoc . R. S. M. , D.Sc. , Assistant - Assayer of the Royal Mint . SECOND EDITION , Revised and Enlarged . 21s . 3. COPPER . By THOS . GIBB , Assoc . R.S.M. , F.I.C. 4. IRON . BY THOS . TURNER , Assoc . R.S.M. ...
... GOLD . By T. K. ROSE , Assoc . R. S. M. , D.Sc. , Assistant - Assayer of the Royal Mint . SECOND EDITION , Revised and Enlarged . 21s . 3. COPPER . By THOS . GIBB , Assoc . R.S.M. , F.I.C. 4. IRON . BY THOS . TURNER , Assoc . R.S.M. ...
Seite 1
... gold , silver , lead , copper , sulphur , coal , and beds or veins of iron ore form mines . Under the head of minières , for which we have no equivalent word in English , are included bog iron ore , pyritous earths fit for working ...
... gold , silver , lead , copper , sulphur , coal , and beds or veins of iron ore form mines . Under the head of minières , for which we have no equivalent word in English , are included bog iron ore , pyritous earths fit for working ...
Seite 4
... gold , iron , lead , manganese , silver , and tin , or precious stones such as diamonds , garnets , rubies and sapphires ; other valuable beds are native sulphur , rock - salt , and innumerable kinds of stone for building , decoration ...
... gold , iron , lead , manganese , silver , and tin , or precious stones such as diamonds , garnets , rubies and sapphires ; other valuable beds are native sulphur , rock - salt , and innumerable kinds of stone for building , decoration ...
Seite 5
... gold- bearing conglomerate at Johannesburg is only 6 inches to 2 feet across ; we find , on the other hand , the lead - bearing sandstone of Mechernich , in Rhenish Prussia , is 100 feet ( 30 m . ) , and a bed of brown coal at Brühl in ...
... gold- bearing conglomerate at Johannesburg is only 6 inches to 2 feet across ; we find , on the other hand , the lead - bearing sandstone of Mechernich , in Rhenish Prussia , is 100 feet ( 30 m . ) , and a bed of brown coal at Brühl in ...
Seite 13
... gold , frequently in nuggets many ounces in weight . " Why only six out of the ten indicators should have the enriching effect is not stated . A third instance of the enriching effect of a pyritiferous rock is afforded in the Thamest gold ...
... gold , frequently in nuggets many ounces in weight . " Why only six out of the ten indicators should have the enriching effect is not stated . A third instance of the enriching effect of a pyritiferous rock is afforded in the Thamest gold ...
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Beliebte Passagen
Seite 53 - KNOW YOUR OWN SHIP. BY THOMAS WALTON, NAVAL ARCHITECT. Specially arranged to suit the requirements of Ships' Officers, Shipowners, Superintendents, Draughtsmen, Engineers, and Others. This work explains, in a simple manner, such important subjects as: — Displacement. — Deadweight.— Tonnage.— Freeboard. —Moments. — Buoyancy.— Strain Structure.— Stability.— Rolling.— Ballasting. — Loading. — Shifting Cargoes. — Admission of Water.— Sail Area.
Seite 43 - The Micro-Structure of Metals and Alloys. — Economic Considerations. " No English text-book at all approaches this in the COMPLETENESS with which the most modern views on the subject are dealt with. Professor Austen's volume will be INVALUABLE, not only to the student, but also to those whose knowledge of the art is far advanced.
Seite 31 - I. — ALKALIES AND ALKALINE EARTH METALS : Magnesium, Lithium, Beryllium, Sodium, Potassium, Calcium, Strontium, Barium, the Carbides of the Alkaline Earth Metals. PART II. — THE EARTH METALS: Aluminium, Cerium, Lanthanum, Didymium. PART III. — THE HEAVY METALS: Copper, Silver, Gold, Zinc and Cadmium, Mercury, Tin, Lead, Bismuth, Antimony, Chromium, Molybdenum, Tungsten, Uranium, Manganese, Iron, Nickel, and Cobalt, the Platinum Group. " COMPREHENSIVE and AUTHORITATIVE ... not only FULL of VALUABLE...
Seite 9 - We are of opinion, therefore, that the term as used in the acts of Congress is applicable to any zone or belt of mineralized rock lying within boundaries clearly separating it from the neighboring rock.
Seite 33 - NYSTROM'S POCKET-BOOK OF MECHANICS AND ENGINEERING. Revised and Corrected by W. DENNIS MARKS, Ph.B., CE (YALE SSS), Whitney Professor of Dynamical Engineering, University of Pennsylvania. Pocket Size. Leather, 155.
Seite 38 - was designed by Professor KANJUNE at an OOCTION to the above Series of Manuals. PROF. RANKINB'S WORKS— (Continued). VII. MISCELLANEOUS SCIENTIFIC PAPERS. Royal 8vo. Cloth, 31s. 6d. Part I. Papers relating to Temperature, Elasticity, and Expansion of Vapours, Liquids, and Solids. Part II. Papers on Energy and its Transformations. Part III. Papers on Wave-Forms, Propulsion of Vessels, &c.
Seite 16 - GENERAL CONTENTS. — The Materials of the Earth — A Mountain Hollow —Down the Valley — Along the Shore — Across the Plains — Dead Volcanoes —A Granite Highland— The Annals of the Earth— The Surrey Hills— The Folds of the Mountains. "The FASCINATING ' OpEN-AlK STUDIES' Of PnOF. OOLE give the subject a GLOW OF ANIMATION . . . cannot fail to arouse keen interest in geology."— Geological Magazine.
Seite 8 - All but the simplest explanations have, therefore, been avoided, and ANSWERS to the Exercises are given. Any person may readily, by careful study, become master of their contents, and thus lay the foundation for a further mathematical course, if desired. It...
Seite 17 - Management. PART II. — SEWAGE DISPOSAL WORKS IN OPERATION— THEIR CONSTRUCTION, MAINTENANCE, AND COST. Illustrated by Plates showing the General Plan and Arrangement adopted in each District.