◆ SpookStack

“, in To: Washington Field From: Washington Field Re: 279A-WF-222936-USAMRIID, 03/29/2006 mention as being involved in the challenge, either through aerosol data _sheets or in interviews: BRUCE IVINS, access records for exist for these dates. The keycard access data for the abovementioned dates and individuals are enclosed with this communication. Data are presented in a spreadsheet, with relevant access points labeled by number on the right-hand side of the page. Also included are the highest total numbers of access points recorded at one time (out of five) for each date and each individual whose records were examined. This number demonstrates how many of the five relevant access points were used in the correct order for entry into the containment area on the given date. For several individuals, there are also extraneous entries into (1) and exits from (5) Building 1412. Oommen 1 OS For ali of the days when access points were recorded for employees who used the containment area to work with aerosol challenges, at least three of the five access points were recorded together. There was therefore always some indication that the employee used the change room or keypad to enter the containment area. In approximately 50% of the cases, one or two of the access points were missing (i.e. 3 of 5, or 4 of 5 points recorded). For the other approximately 50% of the cases, all five access points were used correctly (i.e. 5 of 5 points recorded). Never on a day when an employee was assigned to work in the containment area was he/she shown only to have entered and exited the building on that day (i.e. 2 of 5 points recorded). Of the dates examined, | ~]keyeard access records include relevant access points on only one date, 9/14/1999. On this date, only two_of the access points are recorded, 1) and 5).° In this respect, records are inconsistent with those of the employees who_were known to have used the containment areas on those dates. records show no relevant access points on 9/16/1998. Through the analysis described above, it is therefore found to be unlikely that sed the containment area of Building 1412 on 9/16/1998 or 9/14/1999. 2. Examination of the use of the three main access points into and out of the containment area of Building 1412, for aerosol challenges between 9/14/1999 and 8/14/2001. For each aerosol challenge that occurred between 9/14/1999 and 8/14/2001 and is listed on the spreadsheet entitled "Aerosol Data Sheets, Anthrax Protocols, 12/1996 through 8/2001," the keycard access records for each Principal Investigator (PI) and aerosol technician (tech) listed were analyzed.