Document 8RKZq18p7doRGDNKe1zVBLJya

FILE NAME: General Refractories Company (GRC) DATE: 1935 Sept DOC#: GRC018 DOCUMENT DESCRIPTION: Trade Journal Reference Documenting Knowledge of Health Hazards at Low Doses Knowledge of Health Hazards at Low Doses Date: September 1935 Source: National Safety News: "N o H alfW ay M easures in D ust Control" by Arthur S. Johnson, 32(3): 17-18, 48-51 Exhibit No.: TLV 17 "If you can see the dust, you know it to be a terrific hazard. If there is settlement on ledges there is a hazard." p. 18