Uranium radionuclides and organic biomarkers in sediment core RC27-42

Uranium series radionuclides and organic biomarkers, which represent major groups of planktonic organisms, were measured in western Arabian Sea sediments that span the past 28 ka. Variability in the past strength of the southwest and northeast monsoons and its influence on primary productivity, sea surface temperature (SST), and planktonic community structure were investigated. The average alkenone-derived SST for the last glacial period was ~3°C lower than that measured for the Holocene. Prior to the deglacial, the lowest SSTs coincide with the highest measured fluxes of organic biomarkers, which represent primarily a planktonic suite of diatoms, coccolithophorids, dinoflagellates, and zooplankton. We propose that intensification of winter northeast monsoon winds during the last glacial period resulted in deep convective mixing, cold SSTs and enhanced primary productivity. In contrast, postdeglacial (<17 ka) SSTs are warmer during times in which biomarker fluxes are high. Associated with this transition is a planktonic community structure change, in which the ratio of the average cumulative flux of diatom biomarkers to the cumulative flux of coccolithophorid biomarkers is twice as high during the deglacial and Holocene than the average ratio during the last glacial period. We suggest that this temporal transition represents a shift from a winter northeast monsoon-dominated (pre-17 ka) to a summer southwest monsoon-dominated (post-17 ka) wind system.

Report from the Select Committee on Coal; together with the proceedings of the Committee, minutes of evidence, and appendix.

"Appointed to inquire into the causes of the present dearness and scarcity of coal."

Areawide environmental assessment on the development of a NEPA compliance strategy for new source coal mining activity in the western Kentucky coal field /

Mode of access: Internet.

Extrusion of uranium, uranium alloys, and uranium compacts : a literature search /

This literature search consisting of 240 references to unclassified reports and published literature has been taken from Nuclear Science Abstracts, the official abstract journal of the United States Atomic Energy Commission. The period covered is January 1951 through May 31, 1961. Abstracts for the references can be found by use of the NSA abstract numbers provided.

Reactions of uranium oxides and liquid nitrogen tetroxide /

Work performed at the Argonne National Laboratory.

The coal and metal miners' pocketbook of principles : rules, formulas, and tables.

"Specially compiled and prepared for the convenient use of mine officials, mining engineers, and students preparing themselves for certificates of competency as mine inspectors or mine foremen."

Tests of strength of roof supports used in anthracite mines of Pennsylvania /

"Report of the United States Bureau of Mines to the Pennsylvania State Anthracite Mine Cave Commission and review of the compressive strength of anthracite, bituminous coals and mine supports."

Inspection and testing of mine-type electrical equipment for permissibility /

Includes bibliographical references.

Female - filosofy : fished out and fried /

Also verso t.p.: 1894.

Labor-management seminar II : organization and approaches in the coal industry /

Mode of access: Internet.

Labor-management seminar IV : grievance and arbitration procedures /

Mode of access: Internet.

Rhymes from the mines, and other lines.

Mode of access: Internet.

Memoir - State of Montana, Bureau of Mines and Geology.

Not issued consecutively.