Activity Listings
- Letter from A. D. Mackay to LP RE: Asks LP if any member of the staff or advanced student chemistry undertake to purify 10-25 lbs of a commercial grade of Selenium Metal Powder assaying about 99.50 and bring it up to a purity of 99.98. [Filed under: LP Correspondence: Box #255, Folder #255.6]
- Letter from A. D. Mackay, Industrial and Rare Minerals and Metals, Rare Chemicals to LP RE: Inquires if someone at CIT will purify Selenium Metal Powder for him. [LP's reply May 9, 1939] [Filed under: LP Correspondence: Box #255, Folder #255.6]
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