Panel System Coal Mining Graphical by Young C M (9 results)
- Softcover
Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
Contact seller5-star sellerCondition: New
£ 21.89
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
Published by University of Illinois, Urbana, 1919
- Softcover
- First Edition
Seller: Bookworks [MWABA, IOBA], Beloit, WI, U.S.A.Bookworks [MWABA, IOBA]
Contact seller5-star sellerPamphlet. Condition: 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.
- Softcover
Seller: PBShop.store UK, Fairford, GLOS, United KingdomPBShop.store UK
Contact seller5-star sellerCondition: New
£ 20.81
£ 3.29 shippingShips from United Kingdom to U.S.A.Quantity: 15 available
PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Hardcover
Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
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£ 29.46
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HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Hardcover
Seller: PBShop.store UK, Fairford, GLOS, United KingdomPBShop.store UK
Contact seller5-star sellerCondition: New
£ 27.82
£ 4.16 shippingShips from United Kingdom to U.S.A.Quantity: 15 available
HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Hardcover
Seller: PBShop.store US, Wood Dale, IL, U.S.A.PBShop.store US
Contact seller5-star sellerCondition: New
£ 38.16
Free ShippingShips within U.S.A.Quantity: 15 available
HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.
- Hardcover
Seller: PBShop.store UK, Fairford, GLOS, United KingdomPBShop.store UK
Contact seller5-star sellerCondition: New
£ 33.27
£ 5.87 shippingShips from United Kingdom to U.S.A.Quantity: 15 available
HRD. Condition: New. New Book. Shipped from UK. Established seller since 2000.
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- Softcover
- Print on Demand
Seller: Forgotten Books, London, United KingdomForgotten Books
Contact seller4-star sellerCondition: New
£ 13.76
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Paperback. Condition: 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.
- More images
- Softcover
- Print on Demand
Seller: Forgotten Books, London, United KingdomForgotten Books
Contact seller4-star sellerCondition: New
£ 19.26
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Paperback. Condition: 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.
