Coal-Mine Accidents in the United States, 1942 (open access)

Coal-Mine Accidents in the United States, 1942

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1944
Creator: Adams, W. W. & Geyer, L. E.
Object Type: Report
System: The UNT Digital Library
Metal- and Nonmetal-Mine Accidents in the United States During the Calendar Year 1941 (Excluding Coal Mines) (open access)

Metal- and Nonmetal-Mine Accidents in the United States During the Calendar Year 1941 (Excluding Coal Mines)

Report published by the U.S. Bureau of Mines regarding accidents at mines located in the United States for all operations except coal mines. The report includes statistics about the number and kinds of accidents as well as information about the mining operations (i.e., number of persons employed, average amount of work performed per person, etc.).
Date: 1944
Creator: Adams, W. W. & Kennedy, F. J.
Object Type: Report
System: The UNT Digital Library
Metal- and Nonmetal-Mine Accidents in the United States During the Calendar Year 1940 (Excluding Coal Mines) (open access)

Metal- and Nonmetal-Mine Accidents in the United States During the Calendar Year 1940 (Excluding Coal Mines)

Report published by the U.S. Bureau of Mines regarding accidents at mines located in the United States for all operations except coal mines. The report includes statistics about the number and kinds of accidents as well as information about the mining operations (i.e., number of persons employed, average amount of work performed per person, etc.).
Date: 1942
Creator: Adams, W. W. & Kolhos, M. E.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1935 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1935

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1938
Creator: Adams, W. W. & Kolhos, M. E.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1936 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1936

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1939
Creator: Adams, W. W. & Kolhos, M. E.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Accidents in the United States, 1930 (open access)

Coal-Mine Accidents in the United States, 1930

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1932
Creator: Adams, W. W.; Geyer, L. E. & Chenoweth, L.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Accidents in the United States, 1934 (open access)

Coal-Mine Accidents in the United States, 1934

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1936
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Accidents in the United States, 1935 (open access)

Coal-Mine Accidents in the United States, 1935

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1938
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Accidents in the United States, 1936 (open access)

Coal-Mine Accidents in the United States, 1936

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1939
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Accidents in the United States, 1938 (open access)

Coal-Mine Accidents in the United States, 1938

Report compiled by the U.S. Bureau of Mines including statistics on fatal and non-fatal accidents in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1941
Creator: Adams, W. W.; Geyer, L. E. & Parry, M. G.
Object Type: Report
System: The UNT Digital Library
Project Cowboy : Final Report : Seismic Decoupling for Explosions in Spherical Cavities (open access)

Project Cowboy : Final Report : Seismic Decoupling for Explosions in Spherical Cavities

A series paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by A.L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of 132 Free-field and surface measurements from an explosion in either a 6-ft- or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion of equal size. Shot sizes were from 20 pounds up to a ton. Surface measurements were made out to 100 km and covered the frequency range from 0.05 to 100 cps. The experiments confirmed that decoupling does occur. For explosions that produce an average cavity pressure up to one-fifth and possible more of the lithostatic overburden pressure, seismic waves were decoupled by the 100, i.e., two order of magnitude. Even for explosions producing an average cavity pressure of six times the lithostatic overburden pressure, the seismic waves were decoupled by 20 -- more than a full order of magnitude. Minimum decoupling factors as a function of frequency are presented.
Date: August 1960
Creator: Adams, William M. & Allen, DeWitt C.
Object Type: Report
System: The UNT Digital Library
Seismic Decoupling for Explosions in Spherical Cavities (open access)

Seismic Decoupling for Explosions in Spherical Cavities

Abstract. A series of paired explosions in a salt mine near Winnfield, Louisiana, has been conducted to test a theory by Dr. A. L. Latter concerning seismic decoupling by underground cavities. The theory predicted a decoupling of about 100. Free-field and surface measurements from an explosion in either a 6-ft- or a 15-ft-radius spherical cavity were compared with similar measurements from a completely tamped explosion. Shot sixes were from a 10 lb up to a few tons. Surface measurements were made out to 100 km and covered the frequency range from 0.05 to 100 cpa. The experiment confirmed that decoupling does occur. The actual decoupling factor as a function of frequency is presented and compared with the Latter theory.
Date: September 30, 1960
Creator: Adams, William M. & Carder, Dean S.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1923 (open access)

Coal-Mine Fatalities in the United States, 1923

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1924
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1924 (open access)

Coal-Mine Fatalities in the United States, 1924

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1925
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1925 (open access)

Coal-Mine Fatalities in the United States, 1925

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1926
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1926 (open access)

Coal-Mine Fatalities in the United States, 1926

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1927
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1927 (open access)

Coal-Mine Fatalities in the United States, 1927

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1928
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1928 (open access)

Coal-Mine Fatalities in the United States, 1928

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1930
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Coal-Mine Fatalities in the United States, 1929 (open access)

Coal-Mine Fatalities in the United States, 1929

Report compiled by the U.S. Bureau of Mines including statistics on fatalities in coal mines located in the United States as well as data regarding the various operations (e.g., number of miners employed and average production). The information is organized into tables for comparison and the text draws some overall conclusions in the summary.
Date: 1931
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1923 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1923

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1925
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1924 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1924

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1926
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1925 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1925

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1927
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1926 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1926

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1928
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library
Metal-Mine Accidents in the United States During the Calendar Year 1927 (open access)

Metal-Mine Accidents in the United States During the Calendar Year 1927

Report issued by the U.S. Bureau of Mines covering accidents that happened in metal mines located in the United States including statistics for injuries, fatalities, kinds and causes of accidents, and operational data, such as number of mine workers and shifts worked.
Date: 1929
Creator: Adams, William W.
Object Type: Report
System: The UNT Digital Library