Spencer Pritchard Howell

Explosives Used in December, 1923

1923-1924

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Recent Articles on Petroleum and Allied Substances

Examination of the processes and geological conditions responsible for the widespread erosion of Louisiana's delta-plain coast....

Coal-mine Accidents in the United States and Foreign Countries

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The Hazards of Non Permissible Explosives

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Hazards in the Use of Delay-action Detonators in Coal Mines

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Permissible Explosives

Tested Prior to January 1, 1917

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Picric Acid as a Blasting Agent

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Preventing Accidents by the Proper Use of Permissible Explosives

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Fatalities at Coal Mines in September, 1922

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The Titaniferous Iron Ores in the United States

Their Composition and Economic Value

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Methods for Routine Work in the Explosives Physical Laboratory of the Bureau of Mines

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How to Use Permissible Explosives Properly

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Investigation of Detonators and Electric Detonators

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Prevention of Accidents with Explosives in the Tri-state Zinc and Lead Ore Producing District

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Metal-mine Accidents in the United States During the Calendar Year 1928

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Quarry Accidents in the United States During the Calendar Year 1925

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United States Grades for Northern-grown Onions

Recommended by the United States Department of Agriculture

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Investigation of Detonators and Electric Detonators

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was ...

Progress of Investigations on Liquid-oxygen Explosives

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Investigations of Explosives Used in Coal Mines

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Advance Chapter from Contributions to Economic Geology

(short Papers and Preliminary Reports) : 1910, Part II, Mineral Fuels : Petroleum and Natural Gas

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Recent Articles on Petroleum and Allied Substances

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Methods for Routine Work in the Explosives Physical Laboratory of the Bureau of Mines

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was ...

Mining Methods and Costs at the Eureka Standard Mine

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Report of Investigations

Jan-June 1920

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TNT as a Blasting Explosive

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Additions, Removals and Changes in Permissible List of Explosives from March 15 to May 31, Inc. 1922

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Coal-mine Fatalities in February, 1923

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Report of Investigations 2429-2495

Jan.-June 1923

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Washing and Coking Tests of Coal at the Fuel-testing Plant, Denver, Colo., July 1, 1908, to June 30, 1909

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