Bulletin - Mining and Metallurgical Society of America

1911 called v. 4 to correspond with the 4th year of the society; previous publications were bound in 2 vols. to which no special numbers were given. The first comprised Bulletins 1-18, 1908-1909, and the 2d Bulletins 19-31, 1910.

Montana : resources and opportunities

Title Varies: Resources of Montana

Annual Statements of the Railroad and Canal Companies Together with Report of the State Director of the United New Jersey Railroad and Canal Company

Mode of access: Internet.

Mining and mineral operations in the South-Central States : a visitor guide /

Includes bibliographies.

Mining and mineral operations in the New England and Mid-Atlantic States: a visitor guide /

Special publication.

Memorial of the united Delaware and Raritan Canal Co., Camden and Amboy Railroad and Transportation Company and New Jersey Railroad and Transportation Co., to the Legislature of New Jersey.

Petition for reduced transit duty of heavy products carried.

Annual report of the Delaware and Hudson Company ...

Report year ends Dec. 31.

Report upon the value of the properties of the Charleston light and water company, Charleston, S.C. May 1, 1914,

Mode of access: Internet.

Mining and scientific press.

Mode of access: Internet.

Data mining and simulation: a grey relationship demonstration

Fuzzy data has grown to be an important factor in data mining. Whenever uncertainty exists, simulation can be used as a model. Simulation is very flexible, although it can involve significant levels of computation. This article discusses fuzzy decision-making using the grey related analysis method. Fuzzy models are expected to better reflect decision-making uncertainty, at some cost in accuracy relative to crisp models. Monte Carlo simulation is used to incorporate experimental levels of uncertainty into the data and to measure the impact of fuzzy decision tree models using categorical data. Results are compared with decision tree models based on crisp continuous data.

The effect of Cu addition and milling contaminations on the microstructure evolution of ball milled Al-Pb alloy during sintering

Al-10 wt.%Pb and Al-10 wt.%Pb-x wt.%Cu (x = 0-7.0) bulk alloys were prepared by sintering the mechanically alloyed powders at various temperatures. The microstructure changes of the as consolidated powders in the course of sintering were analyzed by differential scanning calorimetry, scanning electron microscopy, X-ray diffraction analysis and transmission electron microscopy. It has been found that, with respect to the Al-10 wt.%Pb-x wt.%Cu alloy, CuAl2 and Cu9Al4 phases formed in the milling process, and the amount of CuAl2 phase increased while the Cu9Al4 phase disappeared gradually in the sintering process. In both Al-10 wt.%Pb and Al-10 wt.%Pb-x wt.%Cu alloys, the sintering process results in the coarsening of Pb phase and the growth rate of Pb phase fulfills the Lifshitz-Slyozov-Wagner equation even though the size of the Pb phase was in nanometer range. The Pb particle exhibits cuboctahedral morphology and has a cubic to cubic orientation relationship with the Al matrix. The addition of Cu strongly depressed the growth rate of Pb. Contamination induced by milling has apparent influence on the microstructure of the sintered alloys. Al7Cu2Fe and aluminium oxide phases were identified in the sintered alloys. The cuboctahedral morphology of Pb particles was broken up by the presence of the oxide phase. (c) 2006 Elsevier B.V. All rights reserved.