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Westinghouse
Electronic Packaging with Resins, Westinghouse.  Asbestos filler is listed with info about when it should be used. Asbestos supliers also are listed.
Westinghouse Maintenance Hints, 1952.  Asbestos lining used on brakes, asbestos insulation use described.
Westinghouse Electrical Maintenance Hints, 1974.  Asbestos use for Motor Insulation, Micarta, and during welding. Also warnings about asbestos toxicity.