Panel system coal mining de young (17 resultados)
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Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices
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EUR 13,58
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Condición: As New. Unread book in perfect condition.
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Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de AmericaPBShop.store US
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EUR 25,60
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PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.
Editorial: University of Illinois, Urbana, 1919
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- Primera edición
Librería: Bookworks [MWABA, IOBA], Beloit, WI, Estados Unidos de AmericaBookworks [MWABA, IOBA]
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EUR 17,86
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Añadir al carritoPamphlet. Condición: Good. First Edition. Study of efficiency of various coal extraction patterns, I think, with lots of charts & formulas; Bulletin No. 113 from the Engineering Experiment Station. Some wear, gouge on front affecting about 20 pages but no text, spine tanned, one corner creased. Text clean; 76 pages, list of othe…r bulletins.
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Librería: PBShop.store UK, Fairford, GLOS, Reino UnidoPBShop.store UK
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EUR 25,04
Envío por EUR 3,84Se envía de Reino Unido a Estados Unidos de AmericaCantidad disponible: 15 disponibles
PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.
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Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices
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EUR 31,25
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Condición: New.
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Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de AmericaPBShop.store US
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 34,45
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HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.
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Librería: GreatBookPricesUK, Woodford Green, Reino UnidoGreatBookPricesUK
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EUR 19,04
Envío por EUR 17,53Se envía de Reino Unido a Estados Unidos de AmericaCantidad disponible: Más de 20 disponibles
Condición: As New. Unread book in perfect condition.
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Librería: PBShop.store UK, Fairford, GLOS, Reino UnidoPBShop.store UK
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 33,48
Envío por EUR 4,86Se envía de Reino Unido a Estados Unidos de AmericaCantidad disponible: 15 disponibles
HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.
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Librería: PBShop.store US, Wood Dale, IL, Estados Unidos de AmericaPBShop.store US
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 44,63
Gastos de envío gratisSe envía dentro de Estados Unidos de AmericaCantidad disponible: 15 disponibles
HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.
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Librería: PBShop.store UK, Fairford, GLOS, Reino UnidoPBShop.store UK
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 40,05
Envío por EUR 6,86Se envía de Reino Unido a Estados Unidos de AmericaCantidad disponible: 15 disponibles
HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.
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Librería: GreatBookPricesUK, Woodford Green, Reino UnidoGreatBookPricesUK
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EUR 30,68
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Condición: New.
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Librería: Forgotten Books, London, Reino UnidoForgotten Books
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EUR 16,10
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Paperback. Condición: New. Print on Demand. This book provides a graphical analysis of coal extraction, focusing on the panel system used in mining. The author investigates the relationship between extraction percentage and various dimensions of mine workings, such as room width, length, and the number of rooms per entry. By pre…senting the results in tables and diagrams, the book simplifies the understanding of complex calculations involved in determining extraction efficiency. The author emphasizes the importance of increasing the ratio of room width to pillar width and extracting pillar coal to achieve higher extraction percentages. However, the book acknowledges the practical challenges and safety concerns associated with excessive pillar width reduction. Overall, this book offers valuable insights for mining engineers and professionals seeking to optimize coal extraction while maintaining safe and efficient operations. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.
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Librería: Forgotten Books, London, Reino UnidoForgotten Books
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EUR 22,52
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Paperback. Condición: New. Print on Demand. This book presents a detailed study of the panel system of coal mining, examining the extraction methods and their impact on overall yield. The author begins by outlining the reasons for investigating extraction rates and highlighting other studies on the topic. The core of the book li…es in the author's own investigation into the relationship between room dimensions and extraction percentages. Using a 160-acre hypothetical mine, the author calculates the extraction and loss for various room widths, lengths, and numbers of rooms per entry. These computations reveal that higher extraction rates are achievable by increasing the ratio of room width to pillar width and the number of rooms per entry, as well as by lengthening the rooms. An analysis of the extraction and loss distribution within the mine provides insights into the areas where improvements can be made. The author concludes that while increasing the room dimensions can enhance extraction, the most significant gains require the development of methods for extracting pillar coal safely and efficiently. This book offers valuable insights into the factors affecting extraction rates in panel mining systems, providing a foundation for further research and optimization of coal mining practices. Its comprehensive approach and detailed analysis make it an essential resource for mining engineers, researchers, and industry professionals seeking to improve the efficiency and sustainability of coal extraction. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.
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Librería: Majestic Books, Hounslow, Reino UnidoMajestic Books
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EUR 25,85
Envío por EUR 7,60Se envía de Reino Unido a Estados Unidos de AmericaCantidad disponible: 4 disponibles
Condición: New. Print on Demand pp. 82.
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Librería: True World of Books, Delhi, IndiaTrue World of Books
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EUR 26,78
Gastos de envío gratisSe envía de India a Estados Unidos de AmericaCantidad disponible: 18 disponibles
Añadir al carritoLeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1919 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt band…s. A perfect gift for your loved ones. Pages: 82 NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 82.
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Librería: True World of Books, Delhi, IndiaTrue World of Books
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 26,78
Gastos de envío gratisSe envía de India a Estados Unidos de AmericaCantidad disponible: 18 disponibles
Añadir al carritoLeatherBound. Condición: New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. LeatherBound edition. Condition: New. Reprinted from 1919 edition. Leather Binding on Spine and Corners with Golden leaf printing on spine. NO changes have been made to the original text. This is NOT a retyped or an ocr'd repri…nt. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. Pages: 88 As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Pages: 88 Language: English.
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Librería: Gyan Books Pvt. Ltd., Delhi, IndiaGyan Books Pvt. Ltd.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 33,99
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Añadir al carritoLeather Bound. Condición: New. Language: English. Language: English. Presenting an Exquisite Leather-Bound Edition, expertly crafted with Original Natural Leather that gracefully adorns the spine and corners. The allure continues with Golden Leaf Printing that adds a touch of elegance, while Hand Embossing on the rounded spine l…ends an artistic flair. This masterpiece has been meticulously reprinted in 2025, utilizing the invaluable guidance of the original edition published many years ago in 1919. The contents of this book are presented in classic black and white. Its durability is ensured through a meticulous sewing binding technique, enhancing its longevity. Imprinted on top-tier quality paper. A team of professionals has expertly processed each page, delicately preserving its content without alteration. Due to the vintage nature of these books, every page has been manually restored for legibility. However, in certain instances, occasional blurriness, missing segments, or faint black spots might persist. We sincerely hope for your understanding of the challenges we faced with these books. Recognizing their significance for readers seeking insight into our historical treasure, we've diligently restored and reissued them. Our intention is to offer this valuable resource once again. We eagerly await your feedback, hoping that you'll find it appealing and will generously share your thoughts and recommendations. Lang: - English, Pages:- 88, Print on Demand. If it is a multi-volume set, then it is only a single volume. We are specialised in Customisation of books, if you wish to opt different color leather binding, you may contact us. This service is chargeable. Product Disclaimer: Kindly be informed that, owing to the inherent nature of leather as a natural material, minor discolorations or textural variations may be perceptible. Explore the FOLIO EDITION (12x19 Inches): Available Upon Request. 88 88.
