Search Documents

Jan 1, 1893

Jan 1, 1951

[ ]

Jan 1, 1907

Jan 1, 1902

Jan 1, 1932

Jan 1, 1946

Jan 1, 1969

By Rikuro Otsuka

TITANIUM is attacked slowly by hydrochloric acid," and corrosion rates decrease with time of exposure.' This behavior is due to the formation

Jan 1, 1958

Jan 1, 1947

Jan 1, 1947

By J. L. Carne

Careful sampling is necessary to maintain sulphide-oxide ratio of open-pit and underground ores.

Jan 6, 1951

Jan 1, 1923

Jan 1, 1923

By John D. Morgan

THE tense international situation prevailing in the postwar period, and the outbreak of actual hostilities in Korea, directs attention to the status of United States reserves of strategic and critical materials for war. Geologists and mining and metallurgical engineers are particularly interested in this problem, since, with a few important exceptions, almost all of the materials on the official list of strategic and critical materials for stockpiling (see top of page) are metals and minerals.

Jan 3, 1951

By M. I. Nathan, K. Weiser, R. S. Levitt, G. Burns, J. Woodall

Jan 1, 1964

Full details of the program for the New York meeting .were given in the January Bulletin and the announcement mailed to members. The following brief synopsis is offered simply as a reminder of the principal events of this meeting which Chairman Browne says is going to be "different." Time.-Monday, Feb. 14, to Thursday, Feb. 17, 1916, inclusive. Place.-Engineering-Societies' Building, 29 West 39th St., New York. Events.-Monday, Tuesday and Wednesday (Morning and Afternoon) Technical Sessions. Tuesday, 10 a. m.: Annual Business Meeting, Luncheon served in the-Engineering Societies Building between sessions each day.

Jan 2, 1916

By John A. Riddle

Some of the pitfalls and problems in selecting and applying corrosion-resistant materials in uranium plants are discussed, together with some suggested solutions. Includes some cost data.

Jan 1, 1982

By T. M. Barry

HOW often have those who make mining a career said that, "mining is different"? This kind of feeling often expresses itself in talking shop with men of other industries. And there is no doubt about it; mining is different. There are different marketing problems, different production problems, and we certainly have different personnel problems, to cite but a few. Mining people have recently been discovering though, that many of their problems are not unique to mining. They are beginning, in fact, to find that many of them are dead ringers for problems that other industries have had to face and solve years ahead of mining.

Jan 6, 1954

By F. M., Waring

F. M. WARING,* Altoona, Pa.-The necessity for conserving tin has recently been very forcibly brought to the attention of all consumers, and efforts are now being made to reduce the tin content in certain alloys or to substitute other alloys not containing tin. The approximate composition of the non-ferrous alloys in general use on the Pennsylvania Railroad are given in the accompanying table. Phosphor bronze is used principally for rod bushings, main-rod brasses, and crosshead shoes. Ex. B bronze is used to a small extent for backs of car and coach bearings, but the majority of these are now made of the car-journal bronze, which contains, on the average, about 5 per cent. tin.

Jan 12, 1918

By William G. Kegel

Problems involved in putting the gob back underground in modern deep mines we dealt with. In particular, the problems associated with haulage of the gob back to the mine, the blown gob method of dispersion underground, and handling the refuse as slurry are discussed. Some alternative methods of disposal are presented.

Jan 1, 1976