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The Future of Transit Tunneling in Washington, D.C.
By Brian Zelenko, William H. Hansmire
"By the time the latest expansion of the Washington Metropolitan Area Transit Authority (WMATA) system, known locally as Metro and which opened in 1976, is completed in 2020, the system will serve 97
Jan 6, 2018
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Rehabilitation of Tunnels: An Owner’s Perspective
By Teena Redhorse, David Tsztoo, Anthony Yu
"Since ancient times, storing and conveying water via underground water systems and tunnels has been touted for its strategic advantages. Underground cisterns and tunnels assured protection of essenti
Jan 6, 2018
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Exploration Review (9d246178-a5c1-4a8e-8bc1-7c65b46f2b9e)
By N. A. Karl, D. R. Wilburn
"This summary of international mineral exploration activities during 2017 draws upon information from industry sources, published literature, SNL Metals & Mining (SNL), an offering of S&P Global Marke
Jan 5, 2018
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How Harnessing Computer Vision and Machine Learning Will Revolutionize Global Mining
By Ravi Sahu
"In the global mining industry, there are those who seem resigned to the fact that the mining industry has always operated according to certain time-tested principles that don’t involve jumping on eve
Jan 5, 2018
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Barbara J. Arnold; An interview with the 2018 SME President
"Tell us how you got involved in mining and about your career path.My dad was a coal miner and my uncle was a metallurgist, so when I enrolled at Penn State’s New Kensington Campus, I chose the Colleg
Jan 3, 2018
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ISEE Blasting Seismograph Standards 2017
By Michael Mann, Kenneth K. Eltschlager
The International Society of Explosives Engineers (ISEE) Standards Committee has recently updated both the Field Practice Guidelines for Blasting Seismographs and the Performance Specifications for Bl
Jan 1, 2018
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A Forward Look into the U.S. Rare Earths Industry; How Potential Mines Can Connect to the Global Ree Market
"Mining used to be a business primarily focused on the technical aspects of getting valuable ore out of the ground and extracting the minerals efficiently. Without denying the importance of these skil
Jan 1, 2018
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Assessment of Rental Income in Mineral Processing For Rare Earth Deposits
By S. V. Bogdanov, S. I. Grishaev
"The article presents the materials about the appropriateness of the use of rental indices to assess the effectiveness of the use of deposits of rare earth elements (REE). The authors suggest from the
Jan 1, 2018
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An Examination of Mining Companies’ Online Health and Safety Policies: Implications for Improving Organizational Performance
By D. R. Willmer, E. J. Haas
"DISCLAIMER The findings and conclusions in this paper are those of the authors and do not necessarily represent the views of the National Institute for Occupational Safety and Health. Reference to sp
Jan 1, 2018
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Improvement in Quality of Pyrite Concentrate By Low Cost Flotation-Gravity Separation Flowsheet at Fankou Mine (d12fcbc4-e813-4783-9f33-8ffd458eff4d)
By Cuim R., M. L. Li
Fankou Lead-Zinc Mine produced pyrite concentrate (P.C.) from the zinc tailings by rougher and scavenger flotation before 2010, with the averaged S grade of 40.54% at recovery of 79.34% ( to the feed
Jan 1, 2018
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Mining and Metals Industry Structure and Interaction with the Circular Economy
"INTRODUCTION In recent years, there has been increasing focus on environmental and social impacts of the extractive industries, climate change and resource scarcity. The concept of the circular econo
Jan 1, 2018
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Grade Control and Mine Planning – Observations from the Front
By D. E. Cameron
"INTRODUCTION Grade control requirements for base and precious metal projects are an important input to both conceptual and feasibility mine plans. It’s the author’s experience that grade control inpu
Jan 1, 2018
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Evaluation of Lignin Sulfonate as a Depressant in Lead and Zinc Flotation Plant
By M. Paymardi, A. Foroutan, T. P. Oladele, M. Abbaszadeh
"Reducing the amount of zinc and iron in lead concentrate is one of the important aspects of processing in lead and zinc flotation plants which results in improvement of lead concentrate quality and p
Jan 1, 2018
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Deep Sea Miners’ Obligations to Transfer Technology Under UNCLOS and ISA Rules
By Andreas Kaede
INTRODUCTION Due both to the political history of UNCLOS and the sensitivity of the ocean floor and environment to man made impacts, both the Convention (including also the 1994 Amendment) and subsequ
Jan 1, 2018
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Foundation Design and Construction Challenges with Marsh Deposits in a High Seismic Risk Zone
By M. Reza Saberi, T. Ted Miyake
Driven piles are a common tool in any engineer’s toolbox for supporting large structures over very soft ground, especially in high seismic risk zones. Challenges include achieving sufficient vertical
Jan 1, 2018
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An Overview of Mintek’s Competency in Phosphate Beneficiation
By A. Singh
"Considering the dominant role of fertilizers in global phosphate production, it is evident that with the ever increasing development in agriculture there will be a growing demand for phosphate benefi
Jan 1, 2018
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Adapting Responsible Care Program to the Colombian Mining Industry
By D. E. L. Zapata, O. J. R. Baena
"INTRODUCTION Mining is a fundamental part of the historical and economic development of a country. In Colombia, this is reflected from pre-Columbian jewelery, to being now one of the first exporters
Jan 1, 2018
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Pore Water Pressure Response and Effect on Installation Torque of Large Diameter Helical Piles in Soft Soils
By Howard A. Perko, M. Mae Benvenga, Heather H. Trantham
Displacement of soil and groundwater during helical pile installation can produce excess pore water pressures (PWP) in fine-grained soils. Pore water pressure reduces effective stress in the soil imme
Jan 1, 2018
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Changes in the Gold Complex Chemistry and Equilibrium Reactions Affecting Gold Recovery in the Calcium Thiosulfate System
"The thiosulfate leaching process developed by Barrick to treat sulfidic high preg-robbing gold ores uses calcium thiosulfate as the leaching reagent for ores pre-treated by pressure oxidation, resin
Jan 1, 2018
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Innovative Riverbank Erosion Control Retaining Wall System for the Brazos River
By Tracy Brettmann, Will Bohlen
An innovative retaining wall design consisting of tangent drilled shafts with supplementary seal piles was used to limit continuing bank erosion along the Brazos River in Southeast Texas. The riverban
Jan 1, 2018