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Test run of new experimental fibers equipment
Testing for moisture content in dynamite ingredients
Testing laundered fabrics
Testing Quilon water repellent
Testing resin at Marshall Laboratory in Philadelphia, Pennsylvania
Testing stencil paste
Testing the heat resistance of H film
Textile Research Laboratory interior
This is the way we wash our hands
Toxicological Laboratory of the Haskell Laboratory of Industrial Toxicology
Two man laboratory at E.I. du Pont de Nemours & Company Experimental Station
Ultracentrifuge in laboratory of DuPont's Chemical Department
Working in the Textile Research Laboratory

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