Search Documents
Search Again
Search Again
Refine Search
Refine Search
- Relevance
- Most Recent
- Alphabetically
Sort by
- Relevance
- Most Recent
- Alphabetically
-
Comparison Of Arched And Flat Seal Designs Using Finite Element Analysis
The failure of a seal in an underground coal mine can have devastating consequences. Traditionally seals have been constructed as flat walls. Large hydraulic dams, on the other hand, are constructed
Jan 1, 2007
-
Pulverized Coal Injection for Blast-Furnace Operation
By T. W. Oshnock
Pulverized coal (PC) and other injectants can be injected into the blowpipes of a blast furnace to decrease coke requirements. Throughout the history of blast-furnace development, there have been many
Jan 1, 1988
-
Predominance Area Diagrams Bounding the Cu-As-S-O System’s 3D Predominance Diagram at 900 K (627 °C) Mining, Metallurgy and Exploration (8a1d5964-4d01-4605-bf23-bcfbb4667775)
By M. Sadegh Safarzadeh, Stanley M. Howard
The two-dimensional predominance area (Kellogg) diagram (PAD) surfaces bounding the three-dimensional Cu-As-S-O system were constructed at 900 K. The computations employed gases As4O6(g), O2(g), and S
-
Predominance Area Diagrams Bounding the Cu-As-S-O System’s 3D Predominance Diagram at 900 K (627 °C) Mining, Metallurgy and Exploration
By M. Sadegh Safarzadeh, Stanley M. Howard
The two-dimensional predominance area (Kellogg) diagram (PAD) surfaces bounding the three-dimensional Cu-As-S-O system were constructed at 900 K. The computations employed gases As4O6(g), O2(g), and S
-
APM Tunnels at Phoenix Sky Harbor International Airport
By David M. Jurich, Randy J. Essex, Alex de Aboitiz
An Automated People Mover (APM) transit system is planned for the growing Phoenix Sky Harbor International Airport. The APM will improve passenger movements between the terminals, and provide a link t
Jan 1, 2005
-
Double Shields to Build the High Speed Railway Network in Spain
By E. Fernandez
HIGH SPEED RAILWAY NETWORK Spain is a very adequate country to develop the high speed railway network thank to its geographical feature which has a 600km long radius, from Madrid- the capital that
Jan 1, 2005
-
Barrick Goldstrike Roaster Facility Dry Grinding And Leaching
By D. Denton, L. Buckingham
The dry grinding and leaching circuits of the Barrick Gold’s new Roasting Facility at Goldstrike Mine in Nevada, USA incorporate well proven technologies in a unique combination. During the design of
Jan 1, 2001
-
Annual Review 2005
By F. Freme
Coal production in the United States reached a record level in 2005, ending the year at 1.03 Gt (1,133.3 million st) according to preliminary data from the U.S. Energy Information Administration (Tabl
Jan 1, 2006
-
Are Estimators Getting It Right? Comparing Actual And Estimated Costs
By J. Leinart
As is readily apparent, the reliability of the early-stage costs estimated for any mining project are critical to the viability of that project. An estimate too high might leave a potentially profitab
Feb 27, 2013
-
The Impact Of Surface Features Above Underground Mines On Emergency Response - Preprint 09-066
By N. T. Lowe
The National Institute for Occupational Safety and Health (NIOSH), Spokane Research Laboratory (SRL), investigated a means to evaluate the potential impact of surface conditions above underground mine
Jan 1, 2009
-
Tappan Zee Crossing of the Hudson River, New York
By Ian Hooper, Alan Winter, Stefan Sadokierski, Craig Covil
The existing Tappan Zee Bridge was built in the late 1950s and has been working over its design traffic load for some time now. A new project, which is being jointly sponsored by the New York State Th
Jan 1, 2005
-
The Atlanta West Area CSO Storage Tunnel and Pumping Station Project—15 Months of Design Accomplished Within 10 Months
By Refik Elibay, Lawrence A. Williamson, George D. Barnes
Under an extremely aggressive schedule, final design of 13.5 km (8.4 miles) miles of 8.2 m (27 ft) diameter deep rock tunnel, 322 ML/day (85 million gallons / day)submersible pumping station and assoc
Jan 1, 2005
-
Construction of the Big Walnut Augmentation/Rickenbacker Interceptor Tunnel (BWARI, Part 1) —Columbus, Ohio
By Glen D. Frank, Jeremy P. Theys, Mina M. Shinouda, Gary W. Gilbert
PURPOSE OF THE PROJECT The Big Walnut Augmentation Rickenbacker Interceptor project began in 1995with the preparation of the Scope of Services for the design of the Rickenbacker Interceptor, with
Jan 1, 2007
-
Special Report : Consultants Streamline, Sell More When Work is Harder to Find
By Hans W. Schreiber
Most geologic and mining engineering consulting firms* began to experience the recession with declining billing levels, number of inquiries, and proposal requests in late 1981 or early 1982. As of tod
Jan 2, 1983
-
Comparison of Different Blast Design Models, Using a Blasting Software
By Roozbeh Afzali
Designing an appropriate tunnel blasting pattern reduces the cost of rock breakage and subsequent operations such as loading, haulage and support of tunnels. For that reason, we developed a software t
Jan 1, 2008
-
In Situ Leaching Of Uranium: History, Technology And Economics
By T. C. Pool
Physical and chemical conditions permitting, in-situ leaching (ISL) of uranium offers a variety of advantages over conventional production methods including less surface disturbance and less solid was
Jan 1, 2000
-
Some Thoughts On the Current Situation and A Look Ahead
By Richard J. Stoehr
In his time on earth, man has mined about 93.3 kt (3 billion oz) of gold. About one-half of this has been produced in the past 35 years. Roughly one-third of this gold is held as reserve in Central Ba
Jan 11, 1984
-
A Combination Blind Or Reaming Drill For Raise Construction
By L. "Andy" Anderson, Stephen N. Short, James E. Friant
Since the introduction of "boxhole" drilling in South Africa in 1973, the concept of a blind raise, drilled upward from below, has become an accepted mining practice. A combination machine, capable of
Jan 1, 1985
-
New Engine For Ultra-Class Trucks; Cummins Unveils Its 3,728 Kw (4,000 Hp) Platform
In its largest product launch in company history, Cummins Engines welcomed more than 200 customers, vendors and media to witness the unveiling of its new QSK95 engine at its Seymour Engine Plant in Se
Jan 1, 2012
-
The Affect Of Surface/Ground-Water Interactions On Zinc Concentrations In Groundwater Along Silver Creek, Summit County, Utah
By Kerry Gee, Gary Colgan, James Fricke
Introduction Elevated zinc concentrations are observed in groundwater within alluvium adjacent to Silver Creek east of Park City, Utah. The study area is located in a small valley one and one-half
Jan 1, 2005