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The University of Colorado, Boulder, Colo. The University has published a volume, "Geology and Natura Resources of Colorado," by R D George The price is $2 and the volume may be had from the Campus Bookstore, University of Colorado, Boulder, Colorado.

Jan 1, 1933

Jan 1, 1920

Jan 1, 1914

Jan 1, 1941

By A. Eilers

I PRESENT herewith, for the inspection of the members of the Institute, a specimen of coke, made in gas-retorts from the lignite of Trinidad, Colorado.

Jan 1, 1874

Jan 1, 1902

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.

Jan 1, 1923

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Jan 1, 1938

Industrial Preparedness To Cooperate with the U S War Department General Committee ARTHUR S DWIGHT, Chairman H FOSTER BAIN C K LEITH J EDWARD SPURR H. S MULLIKEN Alternate GEORGE OTIS SMITH POPE YEATMAN

Jan 1, 1923

Jan 1, 1918

Jan 1, 1970

Jan 1, 1935

Jan 1, 1968

Jan 1, 1883

Established as a Division February 16, 1948 H Rush Spedden, Chairman Neil Plummer, Associate Chairman Stephen E Erickson, First Regional Vice-Chairman D A Dahlstrom, Second Regional Vice-Chairman Win T Marston, Secretary-Treasurer Dorr-Oliver, Inc 77 Havermeyer Lane Stamford, Connecticut

Jan 1, 1960

Truman H. Aldrich John H. Allen W. Lawrence Austin W. S. Ayres John Henry Banks Wm de L. Benedict Robert Bentley Andrew A Blair Walter M. Brodie

Jan 1, 1934

By William P. Blake

The occurrence of siderite in beds of considerable thickness in the clay formations of Martha's Vineyard, Mass., may have some economical importance, and is at least interesting in a scientific point of view.