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CURRENT MATTERS Page Page New York Meeting, Feb., 1918 .... v 1918 Dues xxvii Meeting of Board of Directors.... vii Members in Military Service .... xxvii Resolution on Manganese viii Personal xxix Special Mission of British Minis- Positions Vacant xxx try of Munitions viii Engineers Available xxxi War Committee of Technical Forthcoming Meetings xxxii Societies ix Advertising Section Remodeled.. xxxiii Local Section News ix Library xxxiv Affiliated Student Societies xx Membership xxxviii The Women's Auxiliary xxi Biographical Notice of W. T. Hall lv Other Societies xxiii Institute Committees lvi Engineering Symbols ... xxvi Officers and Directors lxiv General Index xxvii

Jan 1, 1918

CONTENTS SECTION I Page Page War Notice v Personal xv St. Louis Meeting vi Employment : : xvii Nominations for Officers ix Local Section News xviii Burr A. Robinson x Meetings of Societies :.: xxiv New Collective Index of Transac- Library xxv tions xi Membership : xxxii Alabama Technical Association... xi Institute Committees xlix Proceedings, Meeting of Board of Officers and Directors lvi Directors xi Members of the Institute in Mili- tary Service xiii

Jan 8, 1917

CURRENT MATTERS Page Page New York Meeting : v 27th Engineers xl Year Book, 1918 v Professional Classes War Relief. x1i Minutes of Meeting, Board of W. S. S x1i Directors vi American Engineering Standards xlii President's Report vi Hadfield Prize xlv Local Section News: Members in Military Service... xlviii Columbia xiii Personal li San Francisco xiv Positions Vacant liii New York xvi _ Engineers Available liv Southern California xxxi Forthcoming Meetings 1v United Engineering Society xxxii Library...% lvi Engineering Council xxxv Membership lix Other Societies: Institute Committees lxxviii Mining and Metallurgical Soc- Officers and Directors lxxxvi iety of America xxxix

Jan 3, 1918

CURRENT MATTERS Page Page New York Meeting v Federal Control of Minerals xxxii Meeting of Board of Directors.. ix Naval Consulting Board...' xxxix Reports for Year, 1917: Perkin Medal xl Secretary ix Communication from Albert Treasurer xvii Sauveur xl Committee on Membership... xx Affiliated Student Societies xli Committee on Increase of Membership in Military Service... xli Membership xx Personal xlvii Committee on Publications... xxii Positions Vacant 1 Committee on Library xxiii Engineers Available li Local Section News: Forthcoming Meetings lii Boston xxiv Library liii. Columbia xxv Membership lvii San Francisco xxx Institute Committees lxx Qualifications for Membership.. xxxi Officers and Directors lxxviii.

Jan 2, 1918

CURRENT MATTERS Page Page Colorado Meeting iii. Members in Military Service... xxxvi New York Meeting, Proceedings. iv Personal xxxix War Smoker xi Positions Vacant xli Woman's Auxiliary xxiii Engineers Available xli Meeting of Board of Directors... xxvii Forthcoming Meetings xlii Publication Notes xxviii Library xliii Local Section News: Membership xlvii Colorado xxix Biographical Notices: Montana xxx Arthur B. de Saulles lxxi Puget Sound xxxi James W. Malcolmson lxxii Tulsa xxxii Frank Firmstone lxxiii Affiliated Student Societies xxxii A. Stanley Hill lxxv Eleventh Engineers xxxiii Frederic W. Matthiessen lxxvi Enlistments in Engineer Organ- _ Institute Committees lxxviii izations xxxv Officers and Directors lxxxvi

Jan 4, 1918

SECTION I PAGE PAGE Bulletin Wanted v Northwest Mining Convention St. Louis Meeting v (Columbia Section) xvi Proceedings of the Meeting of Affiliated Student Societies... xvii the Board of Directors vii Harrison W. Craver, New Li-¬ John Fritz Medal viii brary Director xviii Herbert C. Hoover, Food. Con Library xx troller viii Pamphlets for Sale xxii President's Prize ix Membership xxxvi Emmons Memorial Fellowship. x Biographical Notice of Her¬ Meetings of Various Societies. x Mann A: Keller : lviii Personal xi Institute Committees lix Employment xii Officers and Directors lxvi Local Section News xiii

Jan 5, 1917

SECTION I PAGE PAGE President's Western Trip v Presentation of the' John Fritz Hoover Makes Plea to. Stop Food Medal to Henry M. Howe.... xv Waste v International Mining Convention. xxxv. American Committee of Engineers Personal xl in London vii Employment xlii Proceedings, Meeting of Board of Local Section News xliii Directors : vii Forthcoming Meetings of Societies xlvii St. Louis Meeting V... Library xlviii The Woman's Auxiliary. xi Membership liv Members of the Institute in Mili- Biographical Notice of H. T. Chen. lxxiv tary Service xiv Institute Committees lxxv Officers and Directors lxxxii

Jan 7, 1917

SECTION I Page Page Manuscript Closing Date, Febru- Forthcoming Meetings xxvii ary Meeting v . Library xxviii New York Section War Meeting on Membership xxxii Ferro-Alloys v Biographical Notices: Minutes of Meeting, Board of Robert Bell, by F. D. Adams. xlix Directors xvii H. J. Cantwell, by H. A. Members in Military Service xviii Wheeler 1 Personal xxiii Institute Committees Iii Employment xxv Officers and Directors Ix

Jan 11, 1917

[Proceedings VOL. II. PART VI. CONTENTS PAGE A Few of the Adverse Conditions Encountered in Mining Coal in the Utah Fields, by J. B. Forrester ..185 Growth of the Electric Power System of the Union Pacific Coal Company at Rock Springs, Wyoming, by D. C. McKeehan ?.. 193 Screening and Preparing Coal at the Tipple, by Benedict Shubart ?.199 Coal Mine Accounting, by E. R. Gibson List of Members ?.211]

Jan 1, 1921

SECTION I Page Page Report of Nominating Committee. v Employment li Proceedings of St. Louis meeting. , vi Local Section News.: liv Engineering Foundation, Report Affiliated Student Societies lvi of Secretary xxxviii Forthcoming Meetings lvii Engineering Council xlii. Library lviii Suggested College Course on the Membership lxiii Human Side of Engineering... xlii Biographical Notices: Engineering Societies Club of Alexander Bryden. By C. L. Hawaii xlv Bryden lxxxiii Members in Military Service .... xlv E. F. R o e b e r . B y J. W. Meeting of Board of Directors...' xlvii Richards lxxxv 1918 Dues xlviii Institute Committees lxxxvi Transactions for 1917 xlviii Officers and Directors xciv Personal xlix

Jan 12, 1917

By Emmanuel J. Voulgaris

The ?Milos Conferences? is an activity of the non-profit organization ?Milos Conference Center - George Eliopoulos?, located on the island of Milos, Greece. The objective of the ?Milos Conferences? is to create the conditions for interaction among different disciplines of academia and industry, and dissemination of the cutting edge between scientific and technological development. The young scientists are our special aim. The governing body of the ?Milos Conferences? is the ?Milos Conferences Council?. The president of the Council is Mrs. Kitty Kyriacopoulos - founder of the ?Milos Conference Center - George Eliopoulos?, and the members are from academia and industry. The planning and the organization of all conferences are carried out by the ?Heliotopos Professional Congress Organizers? in Athens. The venue is always the ?Milos Conference Center - George Eliopoulos? on the island of Milos. The ?Milos Conferences? comprise of different conference series, each devoted to a general subject. This book covers the proceedings of the ?International Conference on Sustainable Development Indicators in the Mineral Industries?, (SDIMI), a conference of the series under the general title ?Restoring the Natural Balance?.

Jan 1, 2003

Guessing or Knowing! Which? Bumps and Squeezes. Vertical Cutting. Mine Fires. Membership List.

Jan 1, 1924

By NA NA

Copyright © 2020 International Society of Explosives Engineers

Feb 1, 2020

By H. J. Hager, P. H. Haskell

Fox the past 20 years Alabama has probably led all other coal-producing districts in the proportion of coal prepared by wet washing. All rail mines, with one exception, and a high percentage of truck mines now wash all coal under 3 or 4 in. Most of this coal has been cleaned by jigs, though within the past few years one or more wettable plants have been installed for cleaning some of the coal from practically all the major seams. These tables supplement either single or multicell jigs usually for one of the following purposes: (I) to wash the finer sizes of raw coal, (2) to rewash the finer sizes of washed coal after they leave the jigs, (3) to retreat jig middling products. The main purpose of this paper is to present cleaning data and operating factors involved in the preparation by tables of the finer sizes of raw coal. The specific information and data pertain to the Mary Lee seam of coal as extracted at three of the mines of the Alabama By-Products Corporation, which produces coal for both by-product coke-oven consumption and the general steam market. The Mary Lee seam has long been recognized by coal-preparation authorities as presenting a very difficult ash-reduction problem. Washing characteristics and physical structure of the seam vary widely. Its thickness ranges from 32 in. with no rock parting to l00 in. with from one to three partings. Over the entire field the bed contains bands of bone and rash. These are distributed throughout the seam cross section. A portion of this bone or bony coal occurs as definite bands 1 in. or more thick; however, some bone is interlocked as layers within the coal and consequently breaks into flakes when the coal is broken. This material is relatively high in ash and its specific gravity varies widely. It has been observed that in most cases in the washing of Mary Lee coal from 10 to 18 per cent of the raw coal is within ±0.10 specific gravity of the attempted point of separation. Therefore with the average wet jig, only with extreme difficulty can a low-ash product be obtained without loss of much marketable coal in the refuse. Without entering into the controversial question as to whether modern washing equipment can efficiently handle simultaneously all sizes up to a given maximum, suffice it to state that the comparatively old-type jigs in service at the Alabama By-Products Corporation's mines could not clean the fine sizes satisfactorily. Therefore, in 1931 that company installed six diagonal-deck tables at the Barney mine, which were installed as an addition to a complete plant cleaning all coal below minus 3 in. The primary washed product is shipped as steam coal and another portion may be prepared as washed nut for domestic trade. These tables are washing 9 tons per hour of raw coal sized to ¼ in. to 0. The washed table coal is mixed with the 3 to ¼ -in. jig product to constitute a 3 in. to o steam coal.

Jan 1, 1941

By Leason Adams

THE thermocouple as a device for the measurement of temperature is rivaled only by the platinum-resistance thermometer. Both instruments are capable of the highest precision, but the thermocouple, on account of its cheapness, ease of construction, and small cross-section, is finding a continually widening field of usefulness for industrial control as well as for laboratory measurements. Formerly, the thermocouple was subject to two disadvantages: errors due to lack of homogeneity of the metal and the labor involved in the interpolation between fixed points on the temperature scale. Former publications from the Geo-physical Laboratory have described the methods' for the selection and testing of thermocouple wire and have presented standard calibration curves2 for platinum-platinrhodiun and copper-constantan couples, so that the most important objections to the thermocouple as a precision thermometer have been removed. The calibration tables published in 1914 covered the range 0-1755° for the platinum-platinrhodium couple and 0-350° for copper-constantan. It has seemed desirable to extend the table for copper-constantan to -200 and also to include a table for the Hoskins thermocouple. Accordingly, in this paper, the new tables are presented, together with a brief explanation of their use; and, finally, certain diagrams and a paragraph on "cold-junction corrections" are given. Standard Calibration Tables.-In Fig. 1, which illustrates how the electromotive force (e.m.f.) of each of the three couples varies with the temperature, the temperatures of one junction are plotted as abscissas and the corresponding thermo-e.m.f.'s as ordinates. The second junction of the couple is supposed to be at 0°; the curves, therefore, pass through

Jan 9, 1919

By F. G. Miller, J. M. Podgursky

Laboratory and pilot plant work on tabling of 14-mesh X 0 hydrocyclone under flow are summarized. Included are: operating principles of hydrocyclones and tables; performance of these two devices, separately as well as in combination; comparison of the combination hydrocyclone-table system with other fine-coal processing systems; and application of the hydrocyclone-table system in fine-coal circuits. The data show that the table actually compensates for the shortcomings of hydrocyclone and makes a combination table-hydrocyclone system attractive, particularly in those cases where fine pyrite is one of the major contaminants.

Jan 1, 1973

Unless otherwise indicated, pounds are US avoirdupois, feet are US, and gallons are US.

Jan 1, 1985

Volumetric measures [ ]

Jan 1, 1962

By William E. Ford, Edward Salisbury Dana

THIS Appendix contains a series of tables, more or leas complete, of minerals arranged according to chemical composition or to certain prominent crystallograhic or physical characters. These, it is believed, will be of service not only to the student, but ago to the skilled mineralogist. The type used in the printing of the mineral names indicates their relative importance. Table I is a complete list of the species named in this book arranged fist according to the prominent basic elements which they contain and secondly according to their acid radicals. Table II is of Minerals arranged according to their System of Crystallization The other tablets make no claim to completeness, being limited often to common ah important species. For an exhaustive system of Determinative Tables based particularly upon blowpipe and chemical characters, the student is referred to the work of Professors Brush and Pen- field, mentioned on p. 330.

Jan 1, 1922

By Bruce L. Bryson

In the past decade a principal growth area in refractory technology has been the development and use of extra high alumina refractories. The refractories user is asking for, and is prepared to pay for, higher purity, more dense materials with longer life, less maintenance, and better dimensional tolerance to meet the exacting demand of high output processes. High alumina and bauxite refractories are being used more and more to keep pace with the demand for guaranteed performance. The steel industry, for example, is starting to place great reliance on these products. A unique material now available with all the requirements for extreme purity and density is tabular alumina, already proving itself in many refractory applications.

Jan 1, 1973