نتایج جستجو برای: railroad bridge
تعداد نتایج: 54852 فیلتر نتایج به سال:
" A T INTERVALS not longer t han 3 years the Board shall make an estimate of the liabilities created by this Act and the Railroad Retirement Act of 1 9 3 5 and shall include such estimate in its annual report ."1 In accordance with this s tatutory mandate , the Railroad Retirement Board has issued the second actuarial valuation, along with its recommendations and a s ta tement of the Actuarial ...
Just as Diemer reveals the importance of one man to Underground Railroad, Alicestyne Turley’s The Gospel Freedom: Black Evangelicals and Railroad (University Press Kentucky) how state, Kentucky, was an integral if overlooked part African Americans’ quest for emancipation in long-nineteenth century. Reviewer Richard Newman believes most important contribution is her contention that religious lea...
The magnetoacoustic measurement technique has been used successfully for residual stress measurements in laboratory samples[1-4]. However, when used to field test samples with complex geometries, such as railroad wheels, the sensitivity of the method declines dramatically[5,6]. It has been suggested that the decrease in performance may be due, in part, to an insufficient or nonuniform magnetic ...
145 -I 24 Receipts: I Appropriations (equal to Federal insurance contributions).-._---. Intercstandother~........~~.~....-......-...~-~-~...---.~~~~~~~. Proposed locislstion extending coverage, raising tax base, and addingdisabilitybcnents~~.. _.._..........._........ -...______._. Expenditures (benefit and administrative expenses): Existing legislation.-_____._.. -----._.____.._ --.___________...
Within the North American freight railroad industry, there is currently an effort to enable more intelligent telemetry for freight trains. By enabling greater visibility of their rolling stock, including locomotives and railroad cars, railroad companies hope to improve their asset utilization, operational safety, and business profitability. Different communication and sensing technologies are b...
ing to this estimate the railroad retirement system might have a relatively small amount to transfer to the old-age and survivors insurance system, but the amount is far more than offset by the employer and employee contributions with respect to the short-service employees that the railroad retirement system, in effect, collects and retains. No benefits other than the residual death payment, wh...
Greater than half of all the fatal injuries on United States railroads are sustained by trespassers. The paper provides a statistical analysis of the demographics of trespassers, the activities they were engaged in, and the causes of injury. It also analyzes trends over time. The paper finds that the risks of injury and death are particularly acute for males in their 20s and 30s. The annual cas...
Urban Investment versus Local Enterprise: Railroad Financing in Pennsylvania and Virginia, 1830-1860
Scholars have long recognized the important differences between the northern and southern rail networks. Business historians focusing on northern enterprises have documented an impressive list of accomplishments: railroads pioneered modern accounting methods; railroads introduced new management techniques and organizational structures; and railroads helped transform national and international c...
Urinary bladder cancer risk among motor vehicle drivers: a meta-analysis of the evidence, 1977-2008.
BACKGROUND The aim of the study was to summarize bladder cancer risk in motor vehicle drivers and railroad workers using meta-analysis techniques. METHODS We retrieved all published results (3 cohort studies and 27 case-control studies) during 1977-2008. We assessed the heterogeneity of the results assuming a fixed-effect model. For cohort studies, the observed and the expected number of case...
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