An investigation into the causes of accidents to shot firers in bituminous coal mines

In many cases the explosions which kill so many shot firers can be directly attributed to the presence of gas, or coal dust, but often there will be explosions of terrific violence in mines which are so wet as to preclude the possibility of dust being held in suspension in the air current, and where no gas has been detected in the history of the mine. Such an instance came under the writer\u27s observation some time ago in which his opportunities of investigation were excellent, and the results of which may perhaps throw light on other apparently mysterious explosions of similar character. It is the purpose of this paper to go over this particular incident in detail, as being the most representative case of the kind which has come within the writer\u27s experience, and as an especially careful investigation was made in view of anticipated legal action, and the matter being further investigated by the officials of the State Mining Board of Illinois --Introduction, pages 3-4

Aluminum as a commercial conductor of electric energy

In considering the adaptability of any metal to serve as a distributing agent of electrical energy, the investigation must shape itself along three lines, viz, - the electrical, the physical and the chemical properties which the metal may possess. Evidently a deficiency in any of these properties, if serious, will debar it from successfully coping in the market with its competitors. A metal may have excellent conductivity and its behavior electrically may be thoroughly satisfactory, but if it lacks strength, physically, or ability to resist the destructive forces of the atmosphere, chemically, it is obviously inadaquate sic to serve as a conductor --page 1

Bostonia. Volume 17

Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs