2 results for “Union Carbide Corporation”
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Company document · Union Carbide documents · July 1972
S. G. Bayer and R. D. Zumwalde, Evaluating Airborne Asbestos Dust: Membrane Filter Sampling and Phase-Contrast Fiber Counting Procedure (1972)
A July 1972 technical manual by Stephen G. Bayer and Ralph D. Zumwalde describing the U.S. Public Health Service method for sampling airborne asbestos dust on membrane filters and counting and sizing fibers by phase-contrast microscopy. It covers…
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Company document · Union Carbide documents · November 1972
Stephen G. Bayer, The Counting and Sizing Procedures, NIOSH Asbestos Fiber Counting Training Text (1972)
A November 1972 NIOSH training text by Stephen G. Bayer on counting and sizing asbestos fibers on membrane filter samples under a microscope. It sets out numbered counting rules, worked examples, a concentration formula and a blank count record…