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 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).

From Summary: "The investigation of barrier pillars in the Western Middle field is part of the comprehensive study of 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)." From Introduction: "The purpose of this report is to give factual data on barrier pillars that will be helpful in solving the mine-water problem."

From Introduction and Summary: "This report gives results of an investigation of the carbonizing properties of two Tennessee coals, one from Jellico bed Campbell County and the other from the Sewanee bed in Marion County."

From Introduction and Summary: "This paper gives results of an investigation of the composition and carbonizing properties of coals from Beckley bed, Caretta No.5 mine, Susanna, McDowell County, and Glen Rogers No. 2 mine, Glen Rogers, Wyoming County, W. Va.

Report issued by the U.S. Bureau of Mines on the field tests performed on air preheaters. It also discusses the corrosion resistance of different materials, and their corrosive effects. This report contains tables, graphs, photographs and illustrations.

Report issued by the Bureau of Mines over studies conducted on a coal-hydrogenation demonstration plant. The early operations of the demonstration plant are discussed. This report includes tables, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines investigating the estimated reserves of coking coal in Allegany County, Maryland. The investigation also studied properties of coals and coal blends not widely used for metallurgical coke making. This report includes maps and tables.

Report issued by the U.S. Bureau of Mines investigating the estimated reserves of coking coal in Allegany County, Maryland. The investigation also studied properties of coals and coal blends not widely used for metallurgical coke making. This report includes maps and tables.

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 Bureau of Mines over studies of the estimation of coking coal reserves from Letcher County, Kentucky. The methods used and measurements of coking coal reserves are presented. This report includes tables, and maps.

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 U.S. Bureau of Mines evaluating the reserves of coking coal in Wyoming County, West Virginia. The report also lists properties of coal and coal blends from the area. This report includes maps and tables.

Maps illustrating an investigation of barrier pillars in the Western Middle field as part of the comprehensive study of mine-water problem in the anthracite region of Pennsylvania. Scale 1:4,500 feet. Included in the set is a graph (Figure 8) showing the relationships between pumping loads in the anthracite region of Pennsylvania with altitude on the x-axis and distance (in miles) from the Conowingo Portal on the y-axis. An explanation of the graph in Figure 8 (Figure 9) summarizes data from Bureau of Mines Technical Paper 727, Report of Investigations 4700, and Bulletin 513.

Report issued by the U.S. Bureau of Mines regarding the restudy of iron-ore reserves in the Birmingham area to determine where increased production may be obtained in the area if and when required. The report includes tables, graphs, pictures and a map.

Report of investigations issued by the U.S. Bureau of Mines on the Hermada antimony deposit in southwestern Idaho. The investigations included trenching and drilling. The report contains maps of the area, and tables of data.

From Introduction: "The injury data and experience at coal mines in the United States for 1949 are presented in this bulletin under the following general sections: (A) General injury experience: 1. Tables 1 to 18: Contain current data on number of injuries, frequency and severity rates, average severity, major and detailed classification of injuries, and distribution of injuries by part of body and days of disability. (B) Selected injury data: 1. Tables 19 to 45: Contain current data on various selected factors of operating and physical conditions that have contributed to occurrence of injuries at bituminious-coal mines and at Pennsylvania anthracite mines. (C) Injury experience by States: 1. Tables 46 to 52: Contain current data on number of injuries, frequency and severity rates, average severity, major classification of injuries, injury records of all coal-producing States, and the relative standing by States according to injury-frequency rates. (D) Appendix: 1. Tables 53 to 84: Contain certain injury data for the years 1943-1947 that have not heretofore been published."

Report issued by the Bureau of Mines over studies conducted on lead-zinc deposits of Montana. The results of the studies are presented. This report includes tables, maps, and illustrations.

From Summary: " A Low-Tempeature carbonization assay test is described, and factual data derived from this test are presented. The test procedure outlined in this report incorporates a mild-steel retort of improved design an accurately controlled method of heating, and a complete collection and condensation system for the solid, liquid, and gaseous products of carbonization."

From Summary: "To obtain a reliable picture of the anthracite-mine-water problem and to solve that problem, it is necessary to have factual data on the volume and the quality and character of mine water handled by pumping plants in the anthracite region, as well as kinds of pumps utilized and problems concerning their operation. The main conclusion that be drawn from an investigation of drainage practices in the anthracite region is that, although efficient pumping layouts, tunnels for draining active mines, and large-scale surface-drainage facilities for keeping water out of mines are in use, the anthracite industry still is threatened with curtailment, to a major degree, and premature extinction because of the encroachment of water, unless remedial action is undertaken in the vary near future by all interests concerned."

Report issued by the Bureau of Mines over the pegmatite mine in Amelia County, Virginia. The physicality, geology, and mining methods are presented. This report includes tables, maps, and illustrations.

Report issued by the Bureau of Mines on the motor fuel sold throughout the United States between June and August of 1952. It lists trends and characteristics of the fuel sampled. The report includes graphs and tables of the data collected.

Report issued by the U.S. Bureau of Mines on the motor fuels sold during the winter of 1952-53. The characteristics of the fuels sold, and the regions they were sold in are listed. This report includes tables, and maps.

Report issued by the Bureau of Mines over petroleum-engineering studies conducted at the Healdton oil field. The methods used for the study are presented. This report includes tables, maps, illustrations, and photographs.