Report issued by the U.S. Bureau of Mines on estimates of known deposits of coking coal in Cambria County, Pennsylvania. Studies on the properties of coal and coal blends from the area are presented. The report includes maps and tables.

Report issued by the U.S. Bureau of Mines on the known deposits of coking coal in Indiana County. The properties and characteristics of the coal and coal blends sampled are presented. The report includes tables and maps.

Report of investigations issued by the U.S. Bureau of Mines evaluating the known reserves of coking coal in Jefferson County, Pennsylvania. The properties of coal and coal blends from the area are analyzed. This report includes tables, and maps.

Report issued by the Bureau of Mines over an annual study of synthetic liquid fuel production. Results of the annual study are presented and discussed. This report includes maps, tables, illustrations, and photographs.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Washington County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Greene County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over testing conducted on nickel oxide to produce nickel metal. Details of testing methods and results are presented. This report includes tables, illustrations, and photographs.

Report issued by the Bureau of Mines over investigations of coking-coal reserves of Clarion County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over studies conducted on low-temperature carbonization of coal. Methods and results of the studies are presented and discussed. This report includes tables, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines regarding an investigation of the reserves of coking coal in Somerset County, Pennsylvania. The report includes tables and maps representing different coal beds within Somerset County.

Report issued by the Bureau of Mines over studies on the reserves of coking coal from Allegheny County, Pennsylvania. The results of the investigations and the different coal beds sampled are presented. This report includes tables, and maps.

Report issued by the U.S. Bureau of Mines on the estimates of known reserves of coking coal deposits in Armstrong County, Pennsylvania. The properties of coal and coal blends from the area are presented. The report includes tables and maps.

Report issued by the U.S. Bureau of Mines on the estimate of the known reserves of coking coal in Westmoreland County, Pennsylvania. The report evaluates the properties of coal and coal blends from the area, and includes tables, and maps.

Report issued by the U.S. Bureau of Mines on the known reserves of coking coal in Fayette County, Pennsylvania. Studies on the properties of coal and coal blends from the area are presented. This report contains tables, and maps.

Illustrations that accompany a report issued by the U.S. Bureau of Mines regarding a buried valley area (a deposit of clay, sand, and gravel) around the Susquehanna River in the anthracite region of Pennsylvania, near the city of Wilkes-Barre. Most of the images are cross sections of the area.

From Summary and Conclusions: "The objective of this investigation has been stated above in the Introduction. Studies were made of mining operations in the Athens Basin, Rafina and Oropos districts; the Kimi and Aliveri areas on the island of Euboea; and the Peloponnese in the vicinity of Kalamai. (See fig. 2). Mining practices at mines in these areas are summarized briefly in this report. Samples of lignite were shipped to Bureau of Mines experiment stations at Pittsburgh, Pa., and Golden, Colo., for washability and utilization studies."

From Summary and Conclusions: "This report deals with upgrading to metal-lurgical standards of large reserves of high-sulfur Pittsburgh coal remaining in southwestern Pennsylvania and northern West Virginia."

From Scope of Report: "In this report one major unwatering project was developed. Three pools that inundate considerable tonnages of anthracite reserves are close enough together to be unwatered by some centralized system. Three alternative plans were studied to estimate the cost of each."

From Introduction: "The purpose of this investigation was to separate and identify as many of the principal phenolic compounds produced by the mild hydrogenation of Pittsburgh-bed (Bruceton) coal as possible and to determine with the greatest possible accuracy the proportions in which they are present."

From Forward: "This bulletin is the first of a new series, which includes analyses of only tipple and delivered coal. It covers samples collected throughout the United States from July 1, 1947 to June 30, 1950 (fiscal years 1948-50). It is planned that future publications of this series will cover a period of one fiscal year only and be issued as soon as possible after June 30 of each year."

From Scope of Report: "This report discusses the nature of stream-bed and surface seepage problems and mentions remedial measures devised by some anthracite-mining companies to prevent seepage of surface water into their mines."

From Introduction and Summary: "Reports from operating companies showed that 25,715 men worked at coke ovens in 1951, about 6 percent more than were employed in 1950 and, except in 1943, the largest work force since 1930, when 28,139 men were employed. The work time for all employees was 70,190,493 man-hours. The returns indicated an average of 344 work days per man as compared with 341 days in the previous year. Accidents at the ovens resulted in the death of 10 and injury to 768 workers, both of these figures representing fewer injuries than in 1950."

From Introduction: "The investigation of barrier pillars in the Southern field is part of the comprehensive study of the mine-water problem in the anthracite region of Pennsylvania by the Federal Bureau of Mines (1, 2, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 18).

Report issued by the U.S. Bureau of Mines regarding a buried valley area (a deposit of clay, sand, and gravel) around the Susquehanna River in the anthracite region of Pennsylvania, near the city of Wilkes-Barre. According the the introduction, "The purpose of this report is to furnish data on the buried valley of the Susquehanna River that will be useful in solving the anthracite mine-water problem" and "This report (a) discusses the physical characteristics and the influence of the buried valley of the Susquehanna River on anthracite mining in the Wyoming Valley area of the Northern field, (b) correlates pertinent data relating to the buried valley, (c) presents accurate contour maps showing the position of the top of solid rock underlying the water-soaked valley-fill deposits in the buried valley, and (d) presents cross sections at regular intervals across the buried valley showing the irregularities in trend and bottom as well as the thickness, configuration, and nature of the materials composing the water-bearing valley-fill deposits" (p. 3).