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Reduction Mills in Montana in 1925

Description: List of reduction mills in Montana, compiled in the course of investigations of mineral resources of Montana. It includes information about each loaction including: the process, character of ore, when the mill was operated, and custom work; equipment and power used; and capacity in tons.
Date: March 1927
Creator: Gerry, C. N.
Partner: UNT Libraries Government Documents Department

Practical Underground Education of the Coal Miner

Description: Report describing information that should be provided for miners when they are first being trained on-site, as well as an explanation about the education program offered by the Practical Mining School at Dawson, New Mexico.
Date: November 1927
Creator: Grove, G. W.
Partner: UNT Libraries Government Documents Department

Survey of Gravities of Domestic Crudes

Description: Report on the comparative gravities of oil extracted from different regions of the United States.
Date: April 1929
Creator: Hopkins, G. R. & Coons, A. B.
Partner: UNT Libraries Government Documents Department

Ocher and Ochery Earths

Description: Report about ocher or ochery earth, "a natural mineral pigment composed largely of clay permeated with hydrated iron (ferric oxide)" (p. 2). It includes information about the uses of choer, substitutes, artificial ocher, mining and local deposits, import and export of ocher, and related information.
Date: May 1929
Creator: Santmyers, R. M.
Partner: UNT Libraries Government Documents Department

The Meaning of Specifications for Gasoline and Kerosene

Description: Report on how to identify good gasoline and kerosene, written for the average citizen, with an explanation of purchaser and supplier relationships.
Date: November 1926
Creator: Kraemer, A. J.
Partner: UNT Libraries Government Documents Department

Educational Agencies in Mining Communities

Description: Report on the importance of industrial education in the mining sector. It explains general education and facilities for specialized education for proficiency in a given field.
Date: April 1920
Creator: Read, T. T.
Partner: UNT Libraries Government Documents Department

Studies of Basin-Range Structure

Description: From preface: This paper represents the partial fruition of a broad plan to reexamine critically the subject of Basin-Range structure.
Date: 1928
Creator: Gilbert, Grove Karl
Partner: UNT Libraries Government Documents Department

Report of the Twenty-First National Conference on Weights and Measures, 1928

Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: May 1928
Creator: United States. National Bureau of Standards.
Partner: UNT Libraries Government Documents Department

Compressibilities of gases

Description: Reproduction of thirteen graphs for computing compressibilities of various gases and for computing the volumes delivered from cylinders containing various gases.
Date: November 21, 1925
Creator: Pickering, Samuel Fisher
Partner: UNT Libraries Government Documents Department

Report of the Twenty-Second National Conference on Weights and Measures, 1929

Description: Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings.
Date: June 1929
Creator: United States. National Bureau of Standards.
Partner: UNT Libraries Government Documents Department

Performance of B. M. W. 185-horsepower airplane engine

Description: Report discusses the results of testing on a B.M.W. engine in an altitude chamber where temperature and pressure can be controlled to simulate flight at various altitudes. Results for various engine speeds, altitudes, and propeller speeds are provided.
Date: April 13, 1922
Creator: Sparrow, Stanwood Willston
Partner: UNT Libraries Government Documents Department

The Forsyth Coal Field: Rosebud, Treasure, and Big Horn Counties, Montana

Description: From introduction: acknowledgements.-The Forsyth field was examined to collect data upon which to classify the public land included in it with regard to its value as coal land. The geologic mapping was done with the plane table and telescopic alidade, and all locations were tied to land corners.
Date: 1929
Creator: Dobbin, C. E.
Partner: UNT Libraries Government Documents Department

The Kevin-Sunburst Oil Field and Other Possibilities of Oil and Gas in the Sweetgrass Arch, Montana

Description: From introduction: The discovery of oil near Kevin, Mont., in March, 1922, gave prominence to the Sweetgrass arch, which is a large structural uplift somewhat similar in size and degree of folding to the Cincinnati arch. Most of the development so far attempted on this fold has been on the Kevin-Sunburst dome, a bulge upon the crest of the arch just south of the Canadian boundary. The dome covers about 16 townships, is nearly circular in outline, and has very low dips away from its highest point in all directions. Within the last five years (1923-1927) about 1,500 wells have been drilled upon it, over 880 of which are rated as productive. Since May, 1925, the field has stood second in production in the Rocky Mountain States being exceeded only by Salt Creek.
Date: 1929
Creator: Collier, Arthur J.
Partner: UNT Libraries Government Documents Department

Shorter Contributions to General Geology, 1928

Description: From introduction: The district discussed in this report embraces the entire northern peninsula of Michigan and the parts of northern Wisconsin and northeastern Minnesota that were covered by a re-advance of the Superior lobe of the Labrador ice sheet late in the Wisconsin stage of glaciation.
Date: 1929
Creator: Mendenhall, W. C.
Partner: UNT Libraries Government Documents Department

Method and Cost of Mining the Thick Freeport Coal in a Second Western Pennsylvania Mine

Description: From introduction: The purpose of this paper is to present a detailed description of the methods employed and the equipment used, with the results obtained in the operation of this mine in the thick Freeport bed on the northern end of the field, near the Alleghegny-Butler county line in western Pennsylvania. It may be classed as a captive mine, as the largest portion of the product is consumed at the by-product plants of the parent company
Date: July 1929
Creator: Paul, James Washington & Tomlinson, H.
Partner: UNT Libraries Government Documents Department

The Canadian Gypsum Industry

Description: From introduction: The production of gypsum is one of the oldest industries in Canada, and in point of gypsum output Canada ranks third among the countries of the world. Gypsum was discovered in the Maritime Provinces at a very early date, but there is no authentic record..of production until about 1822, when gypsum was mined on a small scale in Ontario. Since.then the production has grown slowly but steadily to more than a million tons. In 1928 the output was 1,205,846 short tons, valued at $3,622,007.
Date: August 1929
Creator: Santmyers, R. M.
Partner: UNT Libraries Government Documents Department

Boundaries, areas, geographic centers and altitudes of the United States and the several states, with a brief record of important changes in their territory

Description: From Forward: "The first edition of the record setting forth the history of the boundaries of the United States and the several States and Territories was prepared by Henry Gannett, assisted by Franklin G. Butterfield, and was published as Bulletin 13 of the United States Geological Survey in 1885. The present bulletin is a revision and enlargement of Bulletin 226 and includes additional matter incidentally connected with boundaries."
Date: 1923
Creator: Douglas, Edward M.
Partner: UNT Libraries Government Documents Department

First experiences with the rotating laboratory

Description: This report describes experiences with a rotating cylinder to explore the effects of motion and flow upon human sensory organs. One observation was that the variation of the resultant line of gravity (from gravity and centrifugal force) was not felt so strongly as might be expected. The impressions produced by the physical effects on the members of the body, especially the ones caused by the deflecting force (Coriolis force), are exactly what the laws of physics would lead us to expect, although somewhat surprising when observed in one's own body.
Date: July 1926
Creator: Prandtl, L.
Partner: UNT Libraries Government Documents Department

Experiments with rotating cylinders in combination with airfoils

Description: As a further contribution to the problem of finding a utilizable polar for landing and for horizontal flight, I am publishing a portion of the wind tunnel work of the Hannover Technical High School.
Date: October 1, 1926
Creator: Frey, Kurt
Partner: UNT Libraries Government Documents Department

Flight characteristics

Description: No Description Available.
Date: August 1, 1923
Creator: STUDENT
Partner: UNT Libraries Government Documents Department

Flexible petrol pipe

Description: No Description Available.
Date: July 1, 1921
Partner: UNT Libraries Government Documents Department