Excerpt from Canadian Electrical News and Engineering Journal, Vol. 13: January, 1903
To facilitate communication between the various parts of the works a telephone system is provided, extending from the offices to all departments. Com pressed air at 100 lbs. Pressure is dist... ributed to every part of the works, and used in the operation of pneu matic drills, hammers, etc., as well as for Operating the pneumatic hoists.
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