R. H. North to J. Goldfield Cancelling the Zelienople Dust Survey (1957)

A one-page memo of October 1, 1957, from R. H. North at division headquarters to J. Goldfield at Manville, with copies to Dr. Kenneth W. Smith and others, on "Dust Survey-Zelienople," project I-ZEL-1480 at J-M's plant in Zelienople, Pennsylvania. The survey, set to start October 7, "will not be carried out at this time." North writes that the decision "has been dictated by the urgent need to hold down expenses and conserve cash at the present time," and that the project would be reconsidered about April 1, 1958.

In Johns-Manville's chronology

Johns-Manville's own chronology of what the company knew describes this document as follows:

Zelienople project 1480 calling for silica dust surveys is cancelled on 10/1/57. "The decision being dictated by the urgent need to hold down expenses and conserve cash at the present time." The subject project is to be reconsidered around 4/1/58.