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By Robert Job

Up to five years ago the pig-iron used by the Philadelphia & Reading Railway Co. had been obtained solely upon the appearance of the fracture; but as the service was unsatisfactory, an investigation was made to determine the quality best adapted

Jan 1, 1905

Estimates of 80% coal recovery in strip mining and 5O% recovery in auger mining are commonly used in reserve base calculations, according to a Bureau study team. A survey of coal mining states east of the Mississippi was conducted to test the validity of those figures.

Jan 10, 1977

By Ellison C. Means

Many Virginia furnaces are troubled with a small percentage of zinc in their stock, this element being present, although the chemist may have failed to report it, either in the ore or in the limestone.

Jan 1, 1889

We are advised by Second-Lieutenant Maxwell E. Erdofy, a member of the Institute, and athletic officer of the 602d Engineers, stationed at Camp Devens, Mass., that his regiment, representing all branches of the engineering profession, is in need of athletic equipment and supplies. The regiment will highly appreciate any assistance in the way of financial contributions, or of apparatus and equipment for their athletic needs.

Jan 5, 1918

By B. Welber, R. Webeler

A CCORDING to accepted theory, fatigue in A] metals is connected with the occurrence of local strain hardening even at applied stresses below the yield point as a consequence of stress concentrations created by the presence of structural inhomogeneities.1 It seemed possible, therefore, that

Jan 1, 1954

Early data about the amounts of coal used in making coke, and even of the first oven plants are meager. Table 84 shows the data about beehive ovens from 1841 to 1940, inclusive, and Table 85 shows the data about byproduct ovens from 1895 to 1940, inclusive.

Jan 1, 1942

By T. Sterry Hunt

In a paper presented to the Institute in 1881* I have discussed at some length the question of the " Hydrometallurgy of Copper," and among others, have noticed two methods, devised and patented by Mr. James Douglas and myself, for the extraction of copper

Jan 1, 1888

New Products Equipment

Jan 1, 1951

Jan 1, 1944

By H. M. Morse

During the year 1942 there were 66 wildcats drilling in Mississippi. One cored in oil sand, the Macro Drilling Company's Longbell No. I in Clarke County, but as yet it has not succeeded in recovering the oil. These drillings broughi to light five salt domes, two of which had heavy oil showing; one drilled by the Magnolia Petroleum Co. in Warren County, and

Jan 1, 1943

By William B. Phillips

In connection with the address of our late President, Mr. Joseph D. Weeks, delivered at the Pittsburgh meeting, in February, 1896,* I venture to believe that a circumstance which came recently to my notice may possess some historical interest. Several years ago I spent some months in Western Kentucky

Jan 1, 1899

The Institute has no available copies of Bulletin No. 7, January, 1906, and Bulletin No. 105, September, 191.5. The sum of 30.50 per copy will be paid for these Bulletins.

Jan 6, 1917

By S. H. Ash

lowest fatal injury rate in history conferences stress selling worker on safety international safety conference beneficial

Jan 2, 1951

Jan 1, 1967

By N. M. Langdon

It is now about, two years since we began wing concentrates from Port Henry magnetic-ores in the blast-furnaces of Witherbee, Sherman & Co. During this time we have had the usual ups and downs incident to blast-furnace practice, and have used the concentrates in

Jan 1, 1892

By H. M. Morse

During the year 1942 there were 66 wildcats drilling in Mississippi. One cored in oil sand, the Macro Drilling Company's Longbell No. I in Clarke County, but as yet it has not succeeded in recovering the oil. These drillings broughi to light five salt domes, two of which had heavy oil showing; one drilled by the Magnolia Petroleum Co. in Warren County, and

Jan 1, 1943

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

By Eugene Guccione

Upholding individual rights-and abhorring power politics-a newly formed group of young professionals is developing private nongovernmental solutions to environmental problems.

Jan 4, 1976

By R. W. Raymond

THE specimen of anthracite which I exhibit is from the Ortiz Mine Grant, about fifteen miles southwest of Santa Fe. The beds belong to the lignitic formation of the Galisteo, which Hayden and

Jan 1, 1874

By William M. Bowron

An interesting calculation was made at the Chattanooga Meeting of 1885 as to the cost of making a ton of pig-iron in the Chatta-

Jan 1, 1889