Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
Между кориците на книгата
Резултати 1 - 5 от 58.
Страница xvii
... timber 195 282. Overcast , iron . 195 283. Overcast pipes . 196 284. Ventilation of colliery : model plan , longwall 197 285. Wind - blower 286. Waterfall . 197 198 287. Earth - temperature 198 288. Air - currents in shallow pits ...
... timber 195 282. Overcast , iron . 195 283. Overcast pipes . 196 284. Ventilation of colliery : model plan , longwall 197 285. Wind - blower 286. Waterfall . 197 198 287. Earth - temperature 198 288. Air - currents in shallow pits ...
Страница xxi
... timbers 359 473. Rope rollers 360 474. Engine and dynamo 360 475. Motor and drum 361 476. Electric cable : casing in shaft 361 477. Pit - bottom siding arrangements 362 362 362 363 363 478. Rope - way : general view 479. Rope - way ...
... timbers 359 473. Rope rollers 360 474. Engine and dynamo 360 475. Motor and drum 361 476. Electric cable : casing in shaft 361 477. Pit - bottom siding arrangements 362 362 362 363 363 478. Rope - way : general view 479. Rope - way ...
Страница 94
... timber fixed securely across the centre of the shaft , either per- manently or , if that is inconvenient , temporarily in permanent slots provided for it . A heavy plumb - bob at the end of the centre - line holds the line in the centre ...
... timber fixed securely across the centre of the shaft , either per- manently or , if that is inconvenient , temporarily in permanent slots provided for it . A heavy plumb - bob at the end of the centre - line holds the line in the centre ...
Страница 110
... or three levels are opened , the sinking of the shaft is gradual , like the development and exhaustion of the mine , and is continued for scores or even hundreds of years . Rectangular Shafts . - Where timber is used for the IIO MINING .
... or three levels are opened , the sinking of the shaft is gradual , like the development and exhaustion of the mine , and is continued for scores or even hundreds of years . Rectangular Shafts . - Where timber is used for the IIO MINING .
Страница 111
... timber is used for the per- manent lining of the shaft , it is frequently made rectangular , as Fig . 164 . Fig . 165 . AUT Fig . 166 . Shaft nearly round . shown in Figs . 164 and 165. There is a framework of round or square timber ...
... timber is used for the per- manent lining of the shaft , it is frequently made rectangular , as Fig . 164 . Fig . 165 . AUT Fig . 166 . Shaft nearly round . shown in Figs . 164 and 165. There is a framework of round or square timber ...
Съдържание
64 | |
71 | |
81 | |
117 | |
125 | |
131 | |
138 | |
188 | |
203 | |
208 | |
231 | |
243 | |
286 | |
294 | |
333 | |
335 | |
364 | |
373 | |
374 | |
388 | |
397 | |
418 | |
424 | |
441 | |
481 | |
482 | |
497 | |
546 | |
Други издания - Преглед на всички
Често срещани думи и фрази
air-current air-road anemometer bars bore-hole boring bottom brattice brick cage capstan cent centre coal measures coal-dust Coal-field colliery compressed conductors cubic foot cylinder Davy lamp depth detonator dirt distance drill driven drum electric engine fire-damp flame flange foot foot-pounds friction fulminate of mercury furnace gauze ground gunpowder haulage heat hole hoppet inches in diameter incline iron ironstone lamp length lifted load lower machine Millstone Grit mineral mines minute outcrop pass Permian pillars pipe piston pit-bottom plate props pulley pump road rocks rods roof rope rule safety-lamp sandstone screw seam of coal shaft shale shown in Fig shows side sinking sometimes speed spur-gearing square inch stalls steam steel stone strata stroke surface temperature thick timber tons tubbing tube upcast valves vein velocity vertical waggons Warwickshire water-gauge wedge weight wheel wire yards
Популярни откъси
Страница 4 - INTRODUCTION TO THE STUDY OF CHEMICAL PHILOSOPHY. The Principles of Theoretical and Systematic Chemistry. With 5 Woodcuts.
Страница 36 - NOTES OF A COURSE OF NINE LECTURES ON LIGHT, delivered at the Royal Institution of Great Britain, 1869. Crown 8vo. , is. 6d. -NOTES OF A COURSE OF SEVEN LECTURES ON ELECTRICAL PHENOMENA AND THEORIES, delivered at the Royal Institution of Great Britain, 1870.
Страница 30 - DIRECTIONS FOR CLASS WORK IN PRACTICAL PHYSIOLOGY : Elementary Physiology of Muscle and Nerve and of the Vascular and Nervous Systems. By EA SCHAFER, LL.D., FRS, Professor of Physiology in the University of Edinburgh. With 48 Diagrams. 8vo., 31.
Страница 21 - Our Place among Infinities : A Series of Essays contrasting our Little Abode in Space and Time with the Infinities Around us.
Страница 36 - VOL. I. :— The Constitution of Nature— Radiation— On Radiant Heat in relation to the Colour and Chemical Constitution of Bodies— New Chemical Reactions produced by Light — On Dust and Disease — Voyage to Algeria to observe the Eclipse — Niagara — The Parallel Roads of Glen Roy — Alpine Sculpture — Recent Experiments on...
Страница 21 - Other Worlds than Ours ; The Plurality of Worlds Studied under the Light of Recent Scientific Researches.
Страница 32 - BRODIE. — THE ESSENTIALS OF EXPERIMENTAL PHYSIOLOGY. For the Use of Students. By TG BRODIE, MD, Lecturer on Physiology, St. Thomas's Hospital Medical School. With 2 Plates and 177 Illustrations in the Text. 8vo. , 6s. 6d. CHAPMAN.— -THE FORAMINIFERA : An Introduction to the Study of the Protozoa.
Страница 30 - QUAIN'S (JONES) ELEMENTS OF ANATOMY. The Tenth Edition. Edited by EDWARD ALBERT SCHAFER, FRS, Professor of Physiology in the University of Edinburgh ; and GEORGE DANCER THANE, Professor of Anatomy in University College, London. VOL. I., PART I. EMBRYOLOGY.
Страница 22 - A NEW STAR ATLAS, for the Library, the School, and the Observatory, in Twelve Circular Maps (with Two Index Plates). Intended as a Companion to 'Webb's Celestial Objects for Common Telescopes.
Страница 22 - HALF-HOURS WITH THE STARS : a Plain and Easy Guide to the Knowledge of the Constellations. Showing in 12 Maps the position of the principal Star-Groups night after night throughout the year. With Introduction and a separate Explanation of each Map. True for every Year.