Simon Harry Ash

Mining Petroleum by Underground Methods

A Study of Methods Used in France and Germany and Possible Application to Depleted Oil Fields Under American Conditions

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American Standard Safety Code for Installing and Using Electrical Equipment in and about Coal Mines (M2.1)

Revision of American Standard Safety Rules for Installing and Using Electrical Equipment in Coal Mines, M2-1926

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Electrical Blasting Practice as Some Coal Mines in State of Washington

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Some Essential Safety Factors in Tunneling

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Permissible Mine Equipment Approved to January 1, 1953

With Appended List of Available Flame-lamp Fuels and Manufacturers of Flame-resistant Trailing Cables

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Gold Mining and Milling in the United States and Canada

Current Practices and Costs

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Automatic Derailing Switch at Roslyn No. 3 Mine, Northwestern Improvement Company, Roslyn, Wash

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Systematic Timbering Rules at the Washington Coal Mines

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Some Factors Affecting an Accident-prevention Program in Metal Mining in California

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Accident Prevention at the New Black Diamond Coal Mine, Washington

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An Automatic Electric Man-hoist for Slopes Or Inclines

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Falls of Roof and Coal in Washington Mines

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Accident Experience and Cost in California Metal Mines

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Safety Practices in Tunneling Operations at the Hetch Hetchy Water-supply Project, City and County of San Francisco, Calif

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Safety Practices in California Gold Dredging

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Some Haulage Safety Devices for Use on Grades, Slopes, and Inclined Shafts

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Mine Flood Prevention and Control

Anthracite Region of Pennsylvania : Final Report of the Anthracite Flood-prevention Project Engineers. 1955-1957

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Explosives Accidents in California Metal Mines

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Surface-water Seepage Into Anthracite Mines in the Wyoming Basin, Northern Field

Anthracite Region of Pennsylvania

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Backfilling Problem in the Anthracite Region as it Relates to Conservation of Anthracite and Prevention of Subsidence

Federal participation in a cooperative "backfilling" program to prevent surface cave-ins in the anthracite region of Pennsylvania is recommended in th...

Water Problem in the Pennsylvania Anthracite Mining Region

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Quarry Accidents in the United States During the Calendar Year 1939

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Safety Committees in the Coal Mines of the State of Washington

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Data on Pumping at the Anthracite Mines of Pennsylvania

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Use of Diesel Locomotives in Tunnels

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Mining Methods and Costs at the Eureka Standard Mine

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Accident Prevention at the New Black Diamond Coal Mine, Washington

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Nine Years of Smoke-abatement Work at Salt Lake City

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Safety Practices in Tunneling Operations at the Hetch Hetchy Water-supply Project, City and County of San Francisco, Calif

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