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Jan 1, 1914

A Progress Report of The Engineering Foundation, which is a history of the Foundation and a report of its activities, has been printed. A limited number may be obtained by members of the Institute by writing to the office of the Institute or to the Secretary of the Foundation.

Jan 11, 1919

Jan 1, 1935

By A. Taylor, S. Leber

WHEN studies of deformation texture, lattice stress, and crystal orientation are made, it is frequently required to know the interplanar angles and subsequently to embody the results of the investigation in a stereographic projection. Tables of

Jan 1, 1955

Jan 1, 1934

The Howe Memorial Lecture, in memory of Henry Marion Howe, Past President of the Institute, was authorized in April, 1923, as an annual address to be delivered by invitation under the auspices of the Institute by an individual of recognized and outstanding attainment in the science and practice of iron and steel metallurgy or metallography, chosen by the Board of Directors

Jan 1, 1942

Jan 1, 1939

Jan 1, 1903

Jan 1, 1953

Institute of Metals Division SAM TOUR, Chairman J R FREEMAN, JR , Vice-chairman ZAY JEFFRIES, Past-chairman C H MATHEWSON, Vice-chairman WILLIAM M CORSE, Secretary-Treasurer 810 Eighteenth Street, N W Washington, D C Executive Committee Until February, 1031 Until February, 1932 Until February, 1933 T S FULLER J L CHRISTIE W M PEIRCE G E JOHNSON ARTHUR PHILLIPS A J PHILLIPS W A SCHEUCH H M WILLIAMS GUY C RIDDELL Research PAUL D MERICA, Chairman S SKOWRONSKI

Jan 1, 1923

Jan 1, 1935

By E. J. Haug, K. L. Clifford, K. L. Purdy

St. Joe’s Minerals Corp.’s Southeast Missouri Mining and Milling Division produces lead, zinc and copper sulfide concentrates at three of its operations. The Viburnum and Fletcher mills have been described in previous papers. The new Bushy Creek mill, dedicated in May of 1973, is an updated version of the Fletcher mill incorporating 8.5m3 (300 cu ft) lead and zinc

Jan 1, 1980

By C. F. Hardy, D. R. Mitchell

Bolts held up roofs as mining machines went on to set new records, but rising labor costs still plagued operators.

Jan 2, 1951

By Akira Yokoyama

Japan is composed of four main islands: Honshu, Hokkaido, Kyushu, and Shikoku (Fig. 1). Between Honshu and Kyushu, a railway tunnel and a road tunnel have been open since 1942 and 1958, respectively. Hokkaido, [ ]

Jan 1, 1970

By C. G. McLachlan

Laboratory flotation tests carried out on massive sulphide ores may not be reproduced in plant practice, and when this occurs the discrepancy can be the result of differences between laboratory and plant grinding. Results of parallel flotation tests are given to support this contention, and data show how tailing losses are affected in corresponding size zones.

Jan 4, 1951

By F. J. Deadrick, A. L. Ramirez, R. J. Lytle

This article describes the evaluation of a new geophysical technique used to map fractures between boreholes: electromagnetic geotomography used in conjunction with salt water tracers. An experiment has been performed in a granitic rock mass. Geotomographic images have been generated and compared with borehole geophysical data: neutron logs, acoustic velocity logs, caliper logs and acoustic televiewer records. Comparisons between the images and the geophysical logs indicate that clusters of fractures were detected but single fractures were not.

Jan 1, 1982

EUGENE WESLEY SHAW,* Washington, D. C. (written discussion?).-Mr. Requa's subject is one of great economic importance, yet relatively new, and he has been able to combine extensive practical experience with the talent of grasping the broad features of a problem that has many discordant details.

Jan 5, 1918

Jan 1, 1957

TENDENCIES toward nationalization grew noticeably stronger in some areas. Late last fall Bolivia took over the tin mines of four foreign operators and handed them a bill for a fabulous amount claimed for damages. In the same breath, the price Bolivia offered to pay for the mines appeared to many to be slightly ridiculous. Many engineers felt that the country would not be able to run the mines successfully. Even if they could, some thought that the Bolivian Government would gut the orebodies in an attempt to get at rich deposits for high profits, leaving the lean ores in unmineable condition.

Jan 2, 1953

By G. W. Mao, A. M. Gaudin, D. W. Fuerstenau

Jan 1, 1960