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By J. Blodget Britton

To the question, "Do the Pennsylvania anthracites contain phosphorus ?" asked at the last meeting of the Institute during the discussion on the metallurgical value of Western lignites, I can now give a definite answer. Through the kindness of a gentleman connected with the Philadelphia and Reading Railroad, and another connected with one of the principal ironworks on the Lehigh, there was sent to the Iron-masters' Laboratory a number of samples of the coals now largely shipped from the Schuylkill and Lehigh regions. Seventeen of these I examined for their contents of ash and phosphorus, and obtained results as follows

Jan 1, 1873

By Lewis M. Cook, Robert H. Morse

The use of portable radon detectors has become routine in reconnaissance uranium surveys where water and sediment samples are analyzed in field labs for radon and radium, and in detailed work where drill hole locations are pinpointed by field determinations of radon in soil gas from shallow holes. During the drilling program itself, however, very few operators are taking advantage of radon and radium analyses to decide whether a barren drill hole was a near miss or whether the immediate area can be written off. The technique is effective both above and below the water table.

Jan 6, 1979

Calculation of the Cap from Torsion-balance Data, Hoskins Mound Salt Dome, Brazoria County, Texas BY DONALD C BARTON (Tech Pub 719 3800 words) Depth, thickness, and edge of the cap rock were calculated from the results of a torsion-balance survey of the dome The cap rock was predicted to extend 1000 to 1500 ft north and east beyond the previously surmised position of the edge of the dome Confirmation by subsequent drilling shows that the calculated depths were within 30 per cent of the true depths and for the most part within 15 per cent

Jan 1, 1937

By G. A. Josey, T. P. Floridis

INFORMATION on the effect of alloying elements on the solubility of sulfur in solid iron alloys is limited to the effects of carbon,' manganese,' and Silicon.Refs. 3 to 5 provide information on the combined effects of silicon and manganese also. In the investigation reported in this communication, the effect of chromium, copper, nickel, and vanadium on the solubility of sulfur in solid iron was determined at 1000". The specimens for this investigation were prepared by melting electrolytic iron and reagent-grade alloying additions in an induction furnace under an argon atmosphere. The melts were allowed to solidify in

Jan 1, 1969

By Hayes Theiling Dorton

This paper describes the record-keeping and reporting responsibilities of the West Virginia Department of Mines and tells about the pilot project conducted to demonstrate the feasibility and worth of implementing a computer-based formation management system encompassing the large amount of data used by the Department and to lay the groundwork for future implementation of a state-wide information network. The paper briefly discusses the equipment and software that was used. It also discusses the system data files and subfiles that were constructed (or will be constructed in later phases of the project). Finally, the paper describes how the system will expand in the next several years.

Jan 1, 1983

By Victor E. Saouma

Chip formation in rock under a line load and in front of a drag bit cutter is numerically investigated. Analysis is accomplished by a special purpose interactive graphics finite element code, SICRAP, written for the simulation of mixed mode crack propagation under 1inear elastic fracture mechanics assumptions. The first study provides some interesting qualitative results, and in the second study, correlation with experimental tests on chip formation by drag bit cutter in Berea sandstone is found to be very satisfactory. This indicates that elastic analysis, coupled with fracture mechanics, is capable of modeling rock cutting.

Jan 1, 1984

By R. A. Wyman

KYANITE schists in the Sudbury area have been generally described by Haw,1 who has also given particular information on preliminary treatment of three large samples from Dryden township, Ontario.2 Kyanite, garnet, biotite, quartz, and feldspar comprise the main ingredients of this ore. Kyanite is the valuable mineral. About 5 ½ tons of -35 +200 mesh product, made by dry rod milling, screening, and separation on the Exolon magnetic separator, were available for treatment by flotation. Magnetic separation had effectively reduced garnet and biotite so that flotation feed consisted essentially of kyanite, quartz, and feldspar, the kyanite content averaging 32 pct and representing about 86 pct of the kyanite in the original ore.

Jan 1, 1958

How often have you faced the adjustable speed drive dilemma: Of all the medium horsepower drive variations around, which one is most cost-effective? Regardless of the industry-from mineral processing to power generation- there is always one optimum drive which will outperform the rest. Philadelphia Gear Corp. recently asked its applications engineers to identify the most typical questions they receive regarding adjustable speed drives. Over a wide spectrum of applications-such as drives for conveyors, crushers, fans, blowers, mills, pumps, and compressors- the following 20 questions surfaced most often. The questions, and our answers, may be helpful when evaluating your next medium hp adjustable speed drive application.

Jan 11, 1978

By A. Kavetsky, W. J. Whiten

Data from ball mills with a wide range of diameters are analyzed using detailed mathematical/ numerical models. Analysis shows the relative power inefficiency of large ball mills is due to their inefficient breakage of coarse particles. The models developed can be used to scale-up mill behavior. The behavior of large mills at Bougainville and Pinto Valley is compared. It is concluded that the mills are equally inefficient at grinding coarse particles. Differences in coarseness of total mill feed are shown to account for the fact that Pinto Valley mills achieved design throughput whereas Bougainville mills did not.

Jan 1, 1985

ERNST PROCHASKA, Bonne Terre, Mo. (written discussion*).-The special importance of this paper is the fact that it calls special attention to the existence of organic sulfur in coal. Many writers have denied the existence of a chemical compound of carbon with sulfur in coal, .but later investigations, and especially the paper by Fraser and Yancey, prove undeniably its existence. As we become more fully convinced of its existence and as the present methods of washing, either in a jig or on tables, are unable to separate the organic sulfur, it remains for an inven-tive genius to perfect a chemical washing process whereby the sulfur will be, dissolved out of the coal, or we must abandon entirely the washing of such coal.

Jan 11, 1919

IRON AND STEEL COMMITTEE ALBERT SAUVEUR, Chairman .A. A. STEVENSON, Vice-Chairman HERBERT M. BOYLSTON, Secretary, Abbot Bldg., Cambridge, Mass. Guilliaem Aertsen, Robert W. Hunt, .-E: Gybbon Spilsbury, John Birkinbine, J. E. Johnson, Jr., J. S. Unger, William H. Blauvelt, William Kelly, Felix A. Vogel, Charles A. Buck, Charles Kirchhoff, Leonard Waldo, James Gayley, Richard Moldenke, William R. Walker, Henry D. Hibbard, Joseph W. Richards, William R. Webster, Henry M. Howe, C. F. W. Rys, Frederick W. Wood. Manuscripts of the following papers on iron and steel for the February -meeting have been received and accepted: Albert Sauveur, Notes on Heating and Cooling Curves of Professor Carpenter's Electrolytic Iron. H. M. Howe and A. G. Levy, Notes; on the Plastic Deformation of Steel during Overstrain.

Jan 2, 1914

By Fred Prime

To an association like the one before which I read this paper, few questions can be more important and constantly recurring than the following, viz.: "What economy can be effected in the manufacture of American iron ?" And it is the one with which I purpose to deal in this paper; premising, however, that my object is merely to indicate the direction in which an answer should be sought for, rather than to give it myself. This subject may be divided into two parts; " Economy in the production of pig-iron," and " Economy in the manufacture of wrought-iron;" but it is to the former alone that I shall confine myself this evening.

Jan 1, 1873

By Frederick Prime

TO an association like the one before which I read this paper, few questions can be more important and constantly recurring than the following, viz.: "What economy can be effected in the manufacture of American iron?" And it is the one with which I purpose to deal in this paper ; premising, however, that my object is merely to indicate the direction in which an answer should be sought for, rather than to give it myself. This subject may be divided into two parts, "Economy in the production of pig-iron," and "Economy in the manufacture of wrought-iron ;" but it is to the former alone that I shall confine myself this evening.

By Ralph E. Wood

X-ray fluorescence analysis can be profitably applied in the mineral industry by improving evaluation and control analyses, while offering lower cost and greater speed than conventional methods. Chemical analyses are not only a major item of cost in exploration and mining, as well as in milling and chemical treatment, but often cause evaluation and control of processing steps to lag behind operations. In the fields of geology and mining, the X-ray technique can be employed without destroying samples and, if necessary, specimens can be analyzed and then used, unchanged, in other evaluation techniques. Results are quickly made available for decisions on progress of exploration or sorting of waste and ore.

Jan 6, 1959

By T. Y. Yan, W. F. Espewheid

The various ion exchange reactions occurring during restoration of formations contaminated with ammonia during in situ uranium leaching are reviewed. Data are presented on the restoration of a previously leached laboratory packed column wing lime saturated brine. Although this restoration fluid selectively and effectively removed the ammonia, 24.5 pore volumes are required to reduce the ammonia concentration from 500-3 mg/L (29- 0.18 gr per gal). The essence of NaCl in the restoration fluid at levels in formation water is beneficial in improving the selectivity of the system for NH4+ removal and reducing Ca + + ion consumption

Jan 1, 1984

(Members are urged to send in for this column any notes of interest concerning themselves or their. fellow-members.) Members and guests who registered at Institute headquarters during the period Nov. 10 to Dec. 10, 1914: H. F. Grondijs, Oruro, Bolivia. E. B. Kirby, St. Louis, Mo. R. W. Shumway, Denver, Colo. W. R. Webster, Philadelphia, Pa. J. N. Houser, Mascot, Tenn. F. S.. Titsworth, Denver, Colo. F. L. Clerc, Denver, Colo. Frank R. Wicks, Butte, Mont. Robert Sticht, Queenstown, Tasmania. C. Q. Schlereth, Denver, Colo. Francis C. Phillips, Pittsburgh, Pa. Robert Hallowell Richards was given a dinner on December 7 at Boston by the corporation, faculty and alumni of Massachusetts Institute of Technology in recognition of his 50 years as a devoted alumnus and teacher and as an expression of the respect and affection in which he is held.

Jan 1, 1915

By N. P. Weymont

A first step towards using advanced control and optimization techniques at Kaiser Aluminum's Baton Rouge Plant has been the decision to utilize digital process control equipment exclusively throughout the plant. This paper describes the philosophy and strategy which has been used to successfully implement this program for both existing plant facilities and plant expansions. Some of the problems that have been encountered include system selection, vendor support, soft- ware development, system security and system reliability. How these problems arose, were overcome and how they can be prevented in future projects is discussed. A key element of the success has been the organization of the technical, engineering and maintenance efforts and also training has been found to be extremely important. Finally, the effect of these experiences upon present thinking is discussed.

Jan 1, 1984

October Meeting of the Institute.-Invitations have been sent to the members of the following societies through the respective Secretaries to attend the October meeting of the Institute and the Dinner which will be given on the evening of Oct. 17 : American Society for Testing Materials, American Iron and Steel Institute, American Society of Mechanical Engineers, American Society. of Civil Engineers, American Institute of Electrical Engineers, . American Foundry men's Association. Members of these Societies have also been invited to contribute to the discussion of the various papers to be presented at the meeting, a revised list of which appears in the notes of the Iron and Steel Committee on p. vi. Many individuals of national and international prominence have also been invited to contribute discussions of these papers, and the response to these invitations has been extremely encouraging.

Jan 9, 1913

By Byron W. Cheever

Of the elements found in iron and steel, none has attracted more attention than phosphorus. It is considered the great enemy of the steel manufacturer-, and the chief aim has been and is to keep it out by using pure crude material, or when once in, to eliminate it or counteract its effect. Its presence is manifested in various ways, but most of all by producing a condition called cold-shortness. The first question, then, which presents itself is, What per cent. of phosphorus produces this condition ? I have searched very carefully for an answer to this question, but have failed to find one. Authors generally agree that wrought-iron may have a larger per

Jan 1, 1887

By H. L. Monroe

Meramec Mining Co., owned 50% by St. Joseph Lead Co. and 50% by Bethlehem Steel Corp., is engaged in mining, concentrating and pelletizing iron ore from the Pea Ridge Mine which is located about 75 miles southwest of St. Louis. The Pea Ridge orebody lies under some 1300 ft of limestone, dolomite, shale, and sandstone. It runs from east to west for about 1/2 mile and varies in width up to a maximum of around 600 ft. The orebody dips about 80" S. The ore is high grade magnetite with some local zones of specular hematite. The Precambrian country rock is rhyolite porphyry.

Jan 12, 1965