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Mineralogy and upgrading ability of Mejel valley zircon oreBy SH. Shahsavari, H. Akbari, M. Noaparast, M. Oliazadeh
Mejel valley zircon ore in Iran is located in north part of Iran and was sampled to evaluate its concentration. The aim of this project was to define the mineralogy of this zone and separating zircon
Jan 1, 2005
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Attendance Up, Attitude Upbeat at Prospectors and Developers MeetingBy Bruce Gellar
For the past six years, the author has made it a priority to attend the Prospectors and Developers Association of Canada’s (PDAC) annual conference. This most recent meeting took place March 10-13, 20
Jan 1, 2002
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Uncertainty Based Push-Back Design Algorithm In Open Pit MiningBy J. Gholamnejad
In open pit mine planning and design, push back mine sequencing is widely used for long-term production planning. In push back design, a series of nested pits is generated and then considered as possi
Jan 1, 2007
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Can we return heavy mineral sands mines in Virginia to productive agricultural uses?By W. Lee Daniels
Significant deposits (> 4,000 ha) of heavy mineral sands were discovered in the USA Coastal Plain of Virginia and North Carolina in 1989. The majority of these lands support highly productive row crop
Jan 1, 2005
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Underground Storage for Hydrocarbon FluidsBy R. L. Loofbourow
SEVERAL categories of storage are used depending on capacity. Operational storage, which is small in comparison with the market, facilitates handling surges of a few hours' or a few days' du
Jan 1, 1959
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Deep-Sea Minerals and the Lure of Advanced Planetary Exploration: A Perspective from AstrobiologyBy Claudio Flores Martinez
The prospect of accomplishing economically and scientifically profitable deep-sea mineral mining within this decade or the next one is of particular interest to the emerging discipline of astrobiology
Sep 1, 2014
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Problems with determining oxygen deficiencies for use in ratios used for assessing spontaneous combustion activitySeveral common ratios used for determining spontaneous combustion activity rely on comparing the amount of various products of oxidation with the amount of oxygen consumed to produce these products. A
Jan 1, 2009
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Mine Roof Truss Support Systems TechnologyBy R. M. Cox
The ground forces generated by a properly installed and tensioned mine roof truss assembly can provide permanent mine roof support, even in severe ground conditions, either by direct suspension of the
Jan 1, 2002
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Exploration Procedure ,And Controls Of Mineralization In The Oatman Mining District, Oatman, ArizonaBy C. G. Clifton
The Oatman District produced approximately 2.2 x 10 6 ounces of gold and 0.8 x 10 ounces of silver between 1897 and 1942. A total of 3.8 x 10 tons of ore averaging 0.58 O/T gold and 0.17 O/T silver wa
Jan 1, 1980
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The Spillway Dilemma For Mine Tailings ClosuresBy T. Clarkin
This paper presents a hydrologic closure design concept to minimize the risk of water discharges from closed mine tailings facilities. It evaluates the applicability of U.S. Nuclear Regulatory Commiss
Jan 1, 2012
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The Economics of Silver and the MinerBy Hugh Douglas
In the past two years recent increases in silver prices over levels that prevailed for many years have changed supply/demand patterns. On the supply side, a silver mining boom is in progress in the Un
Jan 1, 1981
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Extended Cut Mining And Worker Safety In Underground Coal MinesBy E. R. Bauer
The ground control aspects and occupational safety concerns of extended depth-of-cut mining are presented in this U.S. Bureau of Mines (USBM) report. The scope of extended cut use and typical face ope
Jan 1, 1995
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A Study Of Coal Spontaneous Combustion Propensity Based On Kinetic And Coal Quality Parameters Using A TGA SetupThe propensity of coal spontaneous combustion can be evaluated using various laboratory testing methods such as R70 adiabatic tests, thermal gravimetric analyzer (TGA) and critical self-heating temper
Jan 1, 2012
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Selection Of A Novel Mine Tracer Gas For Assessment Of Ventilation Systems In Underground MinesBy S. Underwood
The tracer gas method of conducting ventilation surveys is a means of determining air quantity in underground mines with knowledge of the concentration of the tracer in the atmosphere and the flow rat
Jan 1, 2012
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Microtunnels vs. EPB Risk-Based SelectionBy Michelle L. Ramos
INTRODUCTION The Ballard Siphon was built in 1935 and consists of two 91.4 cm (36-inch) diameter wood-stave pipes. These pipes convey sewer flowsunder the Ship Canal from northwest Seattle and the Ba
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Geopolymer-Based Concrete To Reduce Carbon Foot-Print Of Construction IndustryBy H. Akbari
The ordinary Portland cement (OPC) is the key pozzalonic component of the concrete mix, widely used as the construction material world-wide. Billions of tons of OPC are used in the construction indust
Feb 27, 2013
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Industry and University Cooperative Research– Ways to Make It WorkBy William H. Dresher
Introduction A subject long debated but rarely resolved involves the interaction between the academic community and industry in the sponsorship and conduct of research. The subject is, unfortunately,
Jan 10, 1984
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The United State?s Role In The International Tunnelling AssociationBy Harvey Parker
This is part two of an article on the prominent role that the United States and its industry leaders have played on the International Tunnelling and Underground Space Association (ITA), which represen
Jan 1, 2007
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The Effect Of Media Type On Regrinding With Stirred MillsBy Augustine O. Orumwense
Ball mills are commonly used for regrinding operations in the mineral processing industry. But, in recent times, efforts are being made at the introduction of stirred mills particularly for those inst
Jan 1, 2005
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A Next Generation Mining Machine Guidance and Control SystemBy Janet A. Flinn, David G. Fileccia
Machine guidance and control systems have become more pervasive in the mining industry in recent years but not always from mining-experienced providers. Dozers, motor graders, scrapers, excavators, sh
Jan 1, 2006