Workmen drill holes with compressed-air drill for blasting asbestos ore in the Bell Company's open-pit mine at Thetford-Mines, Quebec
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Female operator Clemance Gagnon watches a machine carding asbestos fibre for spinning and processing at the Johns-Manville factory
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Hon. C.D. Howe watches a male scientist test the curve of a lens by interference fringes at the Instruments Division at the Canadian Arsenals Ltd. optical plant
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Workman Gordon Thomson of Toronto, Ont. guiding synthetic rubber filter cake into the tearing rolls at the Polymer Rubber Corporation plant
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Workman John Seliger makes the final inspection of a new synthetic rubber tire at the Dominion Rubber plant
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View of Horton Spheres storing butadiene and styrene, two chief ingredients of buna-S synthetic rubber at the Polymer Corporation plant
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