Document aBZgMYgEyoL4DDqz5wx6vqaQe

May 5, 1947 CaptaLn Arthur J. Vorwald 2514 Quo Street, H.U. Apartment 210 Washington 7, D. C. (HC) USNR Ro: Owens-Illinois 01a3s Company Experiment 1012 - K-Lo________ Dear Dr. Vorwold: Attached you will find the information you requested from Mr. Delahaat with regard to the above experiment. I am a Iso enclosing a copy of Dr. Gardner* a summary of May 13, 1946, referred to in Mr. Delahantfs memorandum, and a copy of my note to Mr. Uowditch. I believe you now have the whole story and we now await the suggested form of letter to be sent to this company. Sincerely youro. LB Bncs. PLAINTIFF'S EXHIBIT 000271 QWKHS-ILLINOIS GLASS COUPAST TOLEDO 1, OHIO Experiment 1012 X-Lo Inhalation 1. What has been done: a. Dust alone - 2 yrs. 2 l/2 mos. - Ouinea Pigs. b. Dust and Rl simultaneously - 18 mos. - Ouinea Pigs, e. Rats - dust only - 18 bios* 2. Vhat is going on now: a. Dust alone - Guinea Pigs {15 survivors .after 26 l/2 mos. (12 survivors after 20 + mos. b* Rl reactivations - Started January 29, 1947 - no sacri ficing as yet* 3. Vhat study baa been done on present material - vhat remains to be dona* a* Report by Dr* Gardner, Hay 13, 1946, includes: 1. Kiorosooplc - dust alone - 14 bus* ii. Rl and dust - 8 mos. - microscopic. (Gross reported verbally by A.B.D* to Dr. Shook and Ur. Hazard during their visit to the Laboratory February 5, 1947). 111. Dr* Gardner suggested experiment run another year* b. Bring microscopic studies up-to-date: 1. Dust alone - Guinea Pigs - at least to 2 yrs. 11. Rl and dust - to 18 mos. ill. Dust alone - Rats - to 13 mos. 4* Suggestions for future investigation - contemplated length of time: a. Continue to conclusion HI reactivation. b. Add group of Guinea Pigs - 6 mos. dust, then Rl inhalation, and continue in dust with a ppropriate number of controls, especially s lnce dust plus infection appeara to be of paramount importance* c. I started immediately, should be concluded in 15 to 18 mos* COMMENT: Brief introductory study of material by Dr. Vorvald on recent visit suggests that final report may be somewhat more favorable than the results intimated by A.B.D. on February 5, 1947. A. 3. Delahant 00027"