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Authors
Author
Henry C. Howarth
Books
Experiments on Strength of Small Pillars of Coal in the Pittsburgh Bed
Harold Putnam Greenwald, Irving Hartmann, Henry C. Howarth
Characteristics of Fuel Pitches and Their Explosibility in Pulverized Form
Harold Putnam Greenwald, Irving Hartmann, Henry C. Howarth
Coal-dust Explosions in Mines Caused by Direct Electrical Ignition
Harold Putnam Greenwald, George Samuel Rice, Henry C. Howarth
