Industrial Hygiene Walk Through Report Standard A walk through survey was conducted at the Standard Industrial Minerals Company SIC 1499 Laws Mill Bishop California to gather data to characterize talc 19807966 composition in the United States The mill processed talc and kaolin from their own mines and pits as well as talcs from other mines The mill was built in 1949 and employs seven workers 6 days a week during a single 10 hour