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Continuous Haulage Update
By William D. Mayercheck
Beginning in 1974, the Bureau of Mines, U.S. Department of the Interior, sponsored R & D efforts related to further development and use of continuous face haulage in underground coal mines (Cowan, 197
Jan 1, 1981
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Techniques for Assessing and Mitigating Longwall Subsidence Effects on Interstate Highways Mining, Metallurgy and Exploration (02f14e56-44eb-4294-94a4-02fe73f626ca)
By Yi Luo, Jian Yang, Hua Jiang
Surface subsidence induced by underground coal mining activities, especially longwall mining operations, can cause various problems to interstate highways ranging from structural integrity, drivabilit
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Industrial Rocks And Minerals Of New Mexico
By Wm. Terry Siemer
Abstract. The value of industrial rocks and minerals produced in New Mexico in 1978 exceeded 227 million. 1e state ranked first in the nation in production of potash and perlite and was a leader in pu
Jan 1, 1980
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Economic Geology Of The Bellavista Gold Deposit, Costa Rica
By M. A. Alan
The Bellavista Gold Deposit lies 75 Kms north west of San Jose, the capital of Costa Rica, Central America and 3 Kms north east of Miramar, in the Province of Puntarenas. The total road distance from
Jan 1, 1992
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The Treatment Of Refractory Gold Ores Containing Carbonaceous Material And Sulfides
By W. J. Guay
Carbonaceous gold ores containing gold dispersed in sulfides are refractory to cyanidation because: (1 ) the carbonaceous materials adsorb gold during cyanidation; (2) a portion of the gold s so finel
Jan 1, 1981
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Predictive Modelling of CART‑Based Frictional Resistance in Mine Ventilation Systems
By Yucheng Li, De Huang, Yonghong Liu
Mine frictional resistance is one of the essential parameters of mine ventilation systems, and it is of considerable significance for the prevention and control of mine risks and accident hazards. Fri
Jan 28, 2022
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Material Balances In Metallurgical Studies: Current Use At Warren Spring Laboratory
By G. W. Cutting
Interlocking material balances on complex mineral dressing plants greatly assist in metallurgical investigations: indeed, without such a balance, there is no firm basis upon which to base process perf
Jan 1, 1979
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Progressive Design-Build in the Tunneling/Underground Construction Industry—Perspective from the Private Sector - RETC2023
By Carlos Tarazaga
Progressive Design-Build (PDB) is an emerging variation of alternative delivery programs in the underground construction industry. PDB refers to the way a construction project design is developed by t
Jun 13, 2023
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Crushing In The Aggregate Industry
By I. L. Jennings
In most industrialized countries, the largest element of the mining industry in physical volume is that devoted to the extraction and processing of materials for use as construction aggregates. Requir
Jan 1, 1968
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Targeting and Prioritizing Safety Interventions in West Virginia – Preprint 97-51
By J. M. Dean, R. L. Grayson, R. C. Althouse, M. J. Klishis, G. L. Winn
Using powerful database management software, nested-field analysis and microanalysis of narratives have been made of West Virginia accident data, resulting in a new approach for targeting and prioriti
Feb 24, 1997
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Engineering Properties Of Rocks And Rock Masses In The Deep Hines Of The Coeur D'alene Mining District, Idaho
By S. S. M. Chan
The design of most underground support systems has largely been based upon empirical rules. This design method has proven to be satisfactory in most cases as witnessed by the number of successfully co
Jan 1, 1971
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Water Transportation Of Industrial Minerals
By Phillip J. Maddex
Transportation is a major part of yours in the industrial minerals industry. Whereas federal income taxes merely take 50 per cent of your firms profits, transportation cost may take 50 per cent of the
Jan 1, 1969
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Multi-objective Mathematical Programming Framework for Integrated Oil Sands Mine Planning and Tailings Disposal Optimization - Mining, Metallurgy & Exploration (2021)
By Hooman Askari-Nasab, AHLAM MAREMI, EUGENE BEN-AWUAH
In oil sands mining, tailings are voluminous unwanted by-products generated from extracting the desired mineral from the mined ore. Dyke construction and backfilling activities require well-managed te
Apr 14, 2021
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Effect Of Some Heating Parameters On Volume Expansion Of Borax
By B. Kahraman
About 70% of the world?s total boron reserves are located in Turkey. Boron minerals are typically concentrated by attrition scrubbing followed by screening and classification to remove clay minerals a
Jan 1, 2008
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Geology Of The Twin Buttes Copper Deposit Pima County, Arizona ? Introduction
By James L. Kelley
The Twin Buttes Mine, one of the more recently developed large copper mines in the United States, is in the Pima Mining District about 25 miles south of Tucson (Figure 1). Other copper producing mines
Jan 1, 1976
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Multimodal Machine Learning Technologies in Tunnel Geotechnical Applications - NAT2024
By Gunjan R. Bhattarai, K. Bhattarai
Applications of machine learning and robotics in the tunneling industry are still nascent. Research and development are ongoing in TBM guidance; prediction of TBM cutter wear and tunneling induced gro
Jun 23, 2024
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TBM Breakthroughs in Pressurized Conditions—Three Rivers Protection and Overflow Reduction Tunnel (3RPORT) and Northeast Boundary Tunnel (NEBT) Projects - NAT2022
By Francesco Chiappalone, Filippo Azzarà, Raffaele Aliberti, Daniele Nebbia, Lance Waddell
As part of the 3RPORT and NEBT Projects, 5-mile Combined Sewer Overflow Tunnels were excavated with a 19 ft diameter Slurry and 26 ft diameter EPB Tunnel Boring Machines. Due to the difficult geologic
Dec 1, 2022
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Exploring the Benefits of Additional Conveyance Tunnels for the Chicago Area’s Combined Sewer System
By Kevin Fitzpatrick, Carmen Scalise, Patrick Jensen
"The Metropolitan Water Reclamation District of Greater Chicago (MWRDGC) owns and operates the Tunnel and Reservoir Plan (TARP) system which was adopted in 1972. TARP is a network of 110 miles of deep
Jan 1, 2016
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Face Dust Levels At Deep-Cut Underground Coal Mines
By J. D. Potts
Dust surveys were conducted at six underground coal mines to determine if deep-cutting practices expose face workers to higher levels of respirable dust. The surveyed mines were able to successfully m
Jan 1, 2011
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Respirable dust constituents and particle size: a case study in a thin-seam coal mine
By Emily Sarver, Cigdem Keles, Jonathan Gonzalez, Nishan Pokhrel, Lizeth Jaramillo
This paper presents a case study of respirable dust characterization in a thin-seam coal mine in southern West Virginia. Samples were collected in various locations within the mine and analyzed using
May 5, 2022