By Richard E. Gertsch, Richard Lee Bullock
This publication comprises chosen fabric from the out-of-print typical, Underground Mining tools guide. greater than forty chapters overlaying such underground mining themes as sampling, making plans, reserve research, rate calculations, quite a few tools of aid, block and panel caving, and sublevel caving make up this accomplished textual content. a number of tables and figures improve the large fabric present in each one bankruptcy. an exceptional instructing device and resource publication, this e-book is a needs to for any mining pupil or engineer.
Content:
entrance topic
• Preface
• desk of Contents
•Section 1. review 1. Ore Reserve Calculation
2. determining an Underground Mining procedure
three. basic Mine making plans
four. Sampling, Dilution, and restoration
•Section 2. tools Requiring minimal aid five. Room-and-Pillar approach to Open-Stope Mining
6. construction tools of Noncoal Room-and-Pillar Mining
7. Open Stope Mining on the Magmont Mine, Bixby Missouri
eight. Sublevel Stoping
nine. concerns for Sublevel Stoping
10. Excavation layout and Mining equipment within the 1100 Orebody, Mount Isa Mine, Australia
eleven. Stråssa Mine
12. Sublevel Stoping on the EB giant Reefs at Loraine Gold Mines, Ltd.
thirteen. huge Blasthole Stoping at Rødsand Gruber, Norway
14. Vertical Crater Retreat: an enormous Mining process
15. Crater Blasting technique utilized to Pillar restoration at Falconbridge Nickel Mines Ltd.
sixteen. expense Calculations for Sublevel Longhole Stoping
17. rate Estimation for Sublevel Stoping - A Case learn
•Section three. Stopes Requiring extra help except Pillars 18. Shrinkage Stoping: An advent
19. Shrinkage Stoping on the Crean Hill Mine
20. Shrinkage Stoping on the Idarado Mine
21. rate Calculations for Mechanized Shrinkage Stoping
22. Cut-and-Fill Stoping: An creation
23. ideas of Stope making plans and format for flooring regulate
24. Cut-and-Fill at Mount Isa Mines Ltd.
25. The Zinc company, Ltd., and New damaged Hill Consolidated, Ltd.
26. Cut-and-Fill Stoping at big name Mine
27. Cut-and-Fill Stoping at fortunate Friday Mine
28. Cut-and-Fill on the Bruce Mine
29. Cut-and-Fill at Homestake Mining Co.
30. rate Calculations for hugely Mechanized Cut-and-Fill Stoping
31. Undercut-and-Fill Mining: An creation
32. Undercut-and-Fill Mining as Practiced by means of Homestake Mining Co.
33. Undercut-and-Fill Mining at Falconbridge Mine of Falconbridge Nickel Mines Ltd.
34. expense Calculations for Underhand Cut-and-Fill Mining
•Section four. Sublevel Caving 35. Sublevel Caving: An advent
36. The Mechanics and layout of Sublevel Caving structures
37. Sublevel Caving at Craigmont Mines Ltd.
38. Sublevel Caving on the Stobie Mine, Inco Metals Co.
39. Sublevel Caving at LKAB's Kürunavaara Mine
forty. making plans Economics of Sublevel Caving
•Section five. Block and Panel Caving forty-one. Block Caving: normal Description
forty two. Climax Panel Caving and Extraction method
forty three. San Manuel Mine
forty four. The Henderson Mine
Index
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Additional info for Techniques in Underground Mining - Selections from Underground Mining Methods Handbook
Sample text
5 Estimated Grade ("A Cu) I ASSAY Yo REL. COUNTS FREQ. 54 48 42 36 30 STD. DEV. 2846 24 18 12 6 0 z I '9 c\! 16 Scatter diagram and error histogram for the kriging method "! 7 References and Blbliography 43 Summary Remarks Geostatistics provides a comprehensive suite of tools that must be tempered by an experienced ore reserve geologist/engineer to obtain reliable estimates-not only for the total ore reserve parameters, but also for the distribution of recoverable grade throughout the deposit for mine planning and scheduling purposes.
The blasted ore increases its occupied volume by about 70%.
This is an expression of the continuity in mineralization. 12 Variograms for the secondary enrichment zone of a porphyry copper deposit based on a 15-m bench composite support Range. The distance at which the variogram levels off at its plateau value. This reflects the classical geologic concept of an area of influence. Beyond this distance of separation, sample pairs no longer correlate with one another and become independent. Sill (C+ Co). The value at which the variogram function plateaus. For all practical purposes, the sill is equal to the variance of all samples used to compute the variogram.