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• Collection: JM Knowledge Chronology ×
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1 result for “Reaction Department”

1. Company document · JM Knowledge Chronology · April 29, 1953

   Johns-Manville Board of Directors Minutes on the Celite Dust Abatement Program at Lompoc (1953)

   …and that the California health department had issued a bulletin on diatomaceous earth pneumoconiosis in 1952. In Johns-Manville's chronology Johns-Manville's own chronology of what the company knew describes this document as follows…