Document bO9jBmZY0Z6gQ31pEe43bgDGg
WHAT 3M KNEW
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DATES
3 Silicosis is accepted as a known lung disease hazard from working with silica dust.
1920's
1930's
WHAT 3M DID
1940's
1950's
1961
1964
1965 1966 1967
M_______________________ 3M advertises: "They protect health and comfort by blocking foreign particles from your respiratory passges."________________
(&>_______________________
3M ads: "Protects health" "Blocks foreign particles from
___________ respiratory tract."_________________
<2>____________ ____ ________________ ^
3M advertises in Pit & Quarry that the 8500 "Protects Worker's Lungs."
1968 1969 1970
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3M advertises: Protects workers from the hazards of inhaling contaminated air.
3M advertisement: Protects worker's lungs from dust.
1973
1975
1977 1985 1988 1999