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Aggregates used in the construction of roads must be durable, abrasion resistant, and freeze thaw resistant in order to perform well in pavement or as base course. The objective of this study was to investigate whether the Micro Deval test will provide better, timelier, and more repeatable information about the quality of an aggregate than the Sodium Sulfate Soundness test. This objective was met by (1) conducting a thorough literature review, (2) testing a variety of soils from across Montana, and (3) analyzing these results to reveal potential trends. The literature review indicated that the Micro Deval test has good repeatability characteristics, and that it correlates well to field performance. Laboratory tests (Micro Deval, L.A. Abrasion, and Sodium Sulfate) were conducted on a variety of soil types to examine the repeatability of each test method, and to examine how well the methods correlate with each other in terms of predicting aggregate durability and degradation. Test results were normalized to facilitate direct comparisons between the three methods. Linear regression of the data points and corresponding confidence intervals were plotted to qualitatively assess agreement or disagreement between test methods. The authors concluded that the Micro Deval test is a suitable replacement for the Sodium Sulfate test as the primary method for evaluating aggregate durability, with limitations. Because there were some inconsistent durability determinations between test methodologies, the authors recommend that the Micro-Deval test results be further supported by a second aggregate durability test whenever the Micro Deval results fall between the cutoff value and plus 30 percent of the cutoff value. In other words, when the Micro Deval test result for an aggregate is between 18 and 24 percent loss, a second test using an alternate method is recommended before any conclusions are made regarding the durability or quality of an aggregate.

This is a collection of genealogies of the early settlers of "Old Hunterdon County," New Jersey, the majority of the histories tracing families through successive generations of the 18th and 19th centuries in what is now mostly Mercer County. Composed chiefly of a recitation of births, marriages, and deaths, the family histories number more than sixty and touch on several thousand related persons, all of whom are conveniently cited in the index.

A renowned text, THEORIES OF ADOLESCENCE provides students with a concise, well written, illustrated and readable description of the essence of major theoretical positions (both historical and contemporary) about adolescence and about the phenomena of adolescence and development in general. This one-of-a-kind text focuses solely on the theories of adolescence, giving thorough coverage to all the major theories through 14 topic areas.

Jacob Guengerich (or Gingerich) was born 3 August 1811 in Germany. He was the son of J. Guengerich and Barbara Schlabach. Jacob immigrated to the United States ca. 1831 and settled in the Amish community of Somerset Co., Pennsylvania. He married Barbara Miller who was the daughter of Benedict Miller and Catherine Beachy. Jacob and Barbara were the parents of sixteen children. Descendants lived in Ohio, Pennsylvania, Illinois, Indiana, Missouri, Iowa and elsewhere.