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(Members are urged to send in for this column any notes of interest concerning themselves or their fellow-members) Members and guests who called at Institute headquarters during the period Jan. 10, 1917 to Feb. 10, 1917: Victor C. Alderson, Denver, Colo. G. Komar, New York, N. Y. Arthur W. Allen, New York, N. Y . H. H. Lauer, Allentown, Pa. George S. Blair, Pittsburgh, Pa. Frederick MacCoy, Antofagasta, Chile. F. J. Brulé, Toronto, Canada. E. P. Mathewson, Toronto, Canada. W. M. Corse, Buffalo, N. Y. Douglas Muir, San Antonio, Tex. John J Croston, Cullasaja, N.' C. F. W. Osborn, Ajo, Ariz. W. A. Deane, Waxhaw, N. C. Mortimer A. Sears, Washington, D. C. P. H. Dudley, New York N. Y. W. H. Selden, Jr., Iron River, Mich. J. D. Gilchrist, Denver, Colo. W. H. Staver, Yonkers, N. Y. L. Hoffman, Pottersville, N. J. Ralph H. Sweetser, Easton, Pa. Guy R. Johnson, Florence, Wis. Benjamin F. Tibby, Salt Lake City, Utah. W. McA. Johnson, Hartford, Conn. Carl J. Trauerman, Butte, Mont. John S. Kennedy, Philadelphia, Pa. H. C. Wilmot, Arequipa, Peru. D. C. Bard has become a member of the geological department of the Chicago, Milwaukee & St. Paul R. R., with headquarters at Seattle. Jay A. Carpenter has resigned his position as metallurgist for the West End Consolidated at Tonopah and has been appointed superintendent of flip. Nevada. Packard mines it Rochester.

Jan 3, 1917

By Louis A. Panek

Caving of previously undisturbed ground was conducted for a period of about 20 months at two locations about 600 m (2000 ft) apart in an Arizona porphyry copper deposit. When mining was suspended the width of the mined zone at both sites was on the order of one-half the depth and the thickness of ore extracted was only a fraction of the rock column. Thus the results have potential application to predicting the subsidence above a cavern-type excavation. Break cables were used to detect the upward progress of caving. Analytical aerotriangulation was used to determine the vertical and horizontal displacements of 400-plus surface targets covering a 1585 m (5200 ft) square area. The measurements are summarized and interpreted with a view to predicting the rate of rise of a caving brow, detecting the initial surface subsidence, and characterizing the extent, the location, and the varying degrees of expected damage to surface facilities.

Jan 1, 1984

By J. E. Tobey

UNDER war conditions coal immediately assumes a position of highest importance for coal must carry the basic load for industry. The upward trend in production continued through 1941. Bituminous coal production alone about equaled the total output of bituminous and anthracite in 1940. The figures for 1941 approximated 500,000,000 tons for bituminous, and 54,000,000 tons for anthracite, and production of by-product and beehive coke exceeded that of the previous year. The coal industry, under the National Bituminous Coal Act, is going through a period of readjustment, and is beginning to stabilize itself under the statute. The Federal Mine Inspection Nill became law during the year.

Jan 1, 1942

By A. CHESTER BEATTY

SO much has been written about African, and particularly about Northern Rhodesian, copper during the past two years that I feel safe in assuming that you are familiar with the general background of the Rhodesian picture. Therefore, I will confine myself to certain of the high lights in connection with the history, geology, development, ore reserves, and contemplated mining methods in this relatively new and highly important copper field., Unlike most of the other great orebodies of the world, the Roan Antelope mine was not discovered by the hoof of a starving prospector's faithful burro; nor even, as its name might suggest, by a well-placed kick of protest from an antelope stumbling over a malachite outcrop. Late in 1905 an English prospector named Collier, traveling in the N'Dola district, came upon some natives using a green powder for medicinal purposes. Closer examination of the powder revealed that it ' was ground-up malachite. Collier endeavored to persuade the natives to tell him where they obtained this medicine, but' for a long time without success, because of the general feeling among the natives that they did not wish to reveal the resources of their land to the white. Finally however, - he persuaded- brie 'of-the elders to at" least take 'him part way toward, the- place where the malachite was supposed to occur. The bid took him, to a point on the lower regions of the Luanshya river and there left him with the instructions that if he followed the stream up toward its.

Jan 1, 1931

Jan 1, 1948

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Jan 1, 1946

Jan 1, 1950

1. Any society of undergraduates at a technical school, comprising students in any branch of engineering, metallurgy, chemistry, geology, etc., may be recognized by the Board of Directors in its discretion as an Affiliated Student Society, and its name, together with the names of its President and its Secretary, may be published in the MINING AND METALLURGY of the Directory of the Institute. The members of such a society will not be named individually on the membership list of the Institute, but may at any time be proposed for election as associates or junior associates of the Institute, in the usual way. 2. Membership in an Affiliated Student Society, certified by the official representative thereof, and accompanied with suitable testimony as to character and qualifications, will have special, weight with the Membership Committee of the Institute, in its consideration of the proposal of a candidate for membership or for Junior membership.

Jan 1, 1923

By Ta M. Li

Application of an hydraulic mining system to a troublesome overburden removal project has unlocked an estimated three million tons of ore reserves at Caland Ore Co., Ltd.'s open-pit iron operation in Ontario, Canada. The mine, operated by Caland under a 99-year lease and royalty agreement with Steep Rock Iron Mines, Ltd., would have been forced to curtail its mining operations later this year as the economic limits of the original pit design were being reached. As a result of the stripping program, which uses a tandem set of Marconaflo jet slurry systems, Caland officials now estimate that mining will continue into 1977. These reserves, added to existing ore stockpiles, are expected to sustain the firm's pelletizing operation well into 1981. In addition, Caland engineers are initiating studies to continue mining since the ore body, to date, has yet to bottom out.

Jan 10, 1976

By C. R. Boyd

The sulphuretted ores of Carroll and Grayson Counties, Va., Ore Knob, Ashe County, N. C., and Ducktown, Tenn., in their general position, are in the prolongation of the same massive deposits. The existence of the extensive ore-bodies has been well-established, not only in a practical way, but by the careful research of a number of men of science, including Dr. T. S. Hunt, Professor Kerr, Dr. Genth, Rogers, Safford, Professor Egleston, Dr. H. E. Colton, the writer, and others, and described in one or more of the volumes of our Transactions, as well as in other publications. The greater quantity of' these ores being pyrrhotite, although much of them carry nonmagnetic disulphide, their reduction on the gronnd will probably lead to better results than an attempt to mine and ship them to distant places; and their use as sulphuric acid producers, to be employed in the cheap manufacture of valuable fertilizers, will be chiefly the subject of this paper. The great deposits of Carroll County, Va., are now nearer to railway transportation than any of the others, being six to eight miles from the Cripple Creek extension of the Norfolk and Western Railway, now being constructed, the grading of which is in an advanced state of completion. I am not able to state what are the present prospects of an early completion of the contemplated line of railway to Ducktown. For a long while, during the time those deposits were mined and reduced for their copper, the works were forty miles from any railway ; and the same may be said of Ore Knob, N. C. The deposits in Carroll and Grayson Counties, Va., being now the most accessible to cheap transportation, will naturally claim the greater part of our attention ; though it may be pertinent to remark, just here, that the ores of Ducktown, like those of Carroll and Grayson, Va., exist in the undecomposed levels as iron and copper sulphurets, much of which is a non-magnetic disulphide, as stated, with occasional exhibits of sulphides, such as covellite, erubescite, etc. There are, now and then, small quantities of silver, lead, and zinc,

Jan 1, 1886

Jan 1, 1934

1. Any society of undergraduates at a technical school, comprising students in any branch of engineering, metallurgy, chemistry, geology, etc., may be recognized by the Board of Directors in its discretion as an Affiliated Student Society, and its name, together with the names of its President and its Secretary, may be published in the Bulletin or the Year Book of the Institute. The individual members of such a society will not be catalogued as individual members or associates of the Institute, but may at any time be proposed for election as members or associates of the Institute, in the usual way. 2. Membership in an Affiliated Student Society, certified by the official representative thereof, and accompanied with suitable testimony as to character and qualifications, will have special ,weight with the Membership Committee of the Institute, in its consideration of the proposal of a candidate for membership or for Junior membership.

Jan 1, 1917

By Donald H. McLaughlin

MINERAL industry activities have not been seriously hampered by a lack of men with higher training. The balance between opportunities for employment and advancement and available personnel has been a happy one, with enough competition to stimulate effort but not the unfortunate conditions arising from an overabundance. of employment seekers. Nearly all mineral industry educational institutions have been concerned about the falling enrollment in mining and metallurgical courses of study during the past decade. But industry has drawn upon a supply of many types of technically trained men apart from those who prepared their careers specifically in the mineral industry. Some schools have made this possible by uniting geologists, mineralogists, and others with students in mining and engineering. On the other hand, some schools have combined their department of mining engineering with an over-all engineering department and continue to send their graduates into the mineral industry by another route. On the whole, this seems to be a good trend and is likely to result in men better trained for current problems than would have been possible under the older rigid curricula.

Jan 1, 1947

Jan 1, 1970

The Institute conducts jointly with the American Society of Civil Engineers, American Society of Mechanical Engineers and American Institute of Electrical Engineers, certain activities as listed below, and is joint owner with them of certain properties. United Engineering Trustees, Inc. When Mr. Carnegie made his gift which made possible a home for the engineering societies, a separate corporation was organized to act as a holding company and to manage the common property. This was long known as the United Engineering Society but the name has now been changed to one which more nearly reflects the real function of the corporation. It holds title to the Engineering Societies Building and to various funds placed in its charge and is managed by a Board of Trustees of which three are chosen by each of the four societies, American Institute of Mining and Metallurgical Engineers, American Society of Mechanical Engineers, American Institute of Electrical Engineers and American Society of Civil Engineers, which own equal and undivided interests in the property. The land and building cost two million dollars. The interest of each of the Founders societies, aside from especial trust funds, is now valued at $493,352. The A. I. M. E. trustees are Arthur S. Dwight, J. V. N. Derr and George D. Barron. The President of the Board is Francis Lee Stuart and the Secretary, Alfred D. Flinn.

Jan 1, 1923

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Jan 1, 1938

Jan 1, 1890

Jan 1, 1902

1. Any society of undergraduates at a technical school, comprising students in any branch of engineering, metallurgy, chemistry, geology, etc., may be recognized by the Board of Directors in its discretion as an Affiliated Student Society, and its name, together with the names of its President and its Secretary, may be published in the Bulletin or the Year Book of the Institute. The individual members of such a society will not be catalogued as individual members or associates of the Institute, but may at any time be proposed for election as members or associates of the Institute, in the usual way. 2. Membership in an Affiliated Student Society, certified by the official representative thereof, and accompanied with suitable testimony as to character and qualifications, will have special ,weight with the Membership Committee of the Institute, in its consideration of the proposal of a candidate for membership or for Junior membership.

Jan 1, 1917

1. Any society of undergraduates at a technical school, comprising students in any branch of engineering, metallurgy, chemistry, geology, etc., may be recognized by the Board of Directors in its discretion as an Affiliated Student Society, and its name, together with the names of its President and its Secretary, may be published in the Bulletin or the Year Book of the Institute. The individual members of such a society will not be catalogued as individual members or associates of the Institute, but may at any time be proposed for election as members or associates of the Institute, in the usual way. 2. Membership in an Affiliated Student Society, certified by the official representative thereof, and accompanied with suitable testimony as to character and qualifications, will have special, weight with the Membership Committee of the Institute, in its consideration of the proposal of a candidate for membership or for Junior membership.

Jan 1, 1923