Mr. Cadigan concluded that the paper and tape from the bag were identical in all respects to the sample paper and tape taken from the Texas School Book Depository shipping room on November 22, 1963.[C4-192] On December 1, 1963, a replica bag was made from materials found on that date in the shipping room. This was done as an investigatory aid since the original bag had been discolored during various laboratory examinations and could not be used for valid identification by witnesses.[C4-193] Cadigan found that the paper used to make this replica sack had different characteristics from the paper in the original bag.[C4-194] The science of paper analysis enabled him to distinguish between different rolls of paper even though they were produced by the same manufacturer.[C4-195] Since the Depository normally used approximately one roll of paper every 3 working days,[C4-196] it was not surprising that the replica sack made on December 1, 1963, had different characteristics from both the actual bag and the sample taken on November 22. On the other hand, since two rolls could be made from the same batch of paper, one cannot estimate when, prior to November 22, Oswald made the paper bag. However, the complete identity of characteristics between the paper and tape in the bag found on the sixth floor and the paper and tape found in the shipping room of the Depository on November 22 enabled the Commission to conclude that the bag was made from these materials. The Depository shipping department was on the first floor to which Oswald had access in the normal performance of his duties filling orders.[C4-197] _Fibers in paper bag matched fibers in blanket._--When Paul M. Stombaugh of the FBI Laboratory examined the paper bag, he found, on the inside, a single brown delustered viscose fiber and several light green cotton fibers.[C4-198] The blanket in which the rifle was stored was composed of brown and green cotton, viscose and woolen fibers.[C4-199] The single brown viscose fiber found in the bag matched some of the brown viscose fibers from the blanket in all observable characteristics.[C4-200] The green cotton fibers found in the paper bag matched some of the green cotton fibers in the blanket “in all observable microscopic characteristics.”[C4-201] Despite these matches, however, Stombaugh was unable to render an opinion that the fibers which he found in the bag had probably come from the blanket, because other types of fibers present in the blanket were not found in the bag. He concluded: All I would say here is that it is possible that these fibers could have come from this blanket, because this blanket is composed of brown and green woolen fibers, brown and green delustered viscose fibers, and brown and green cotton fibers. * * * We found no brown cotton fibers, no green viscose fibers, and no woolen fibers.