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CHARGE NUMBER: 1005 PROJECT TITLE: Improved' Semiworks Operations PROJECT LEADER: J. F. Sherwood PERIOD COVERED: July, 1981 DATE OF REPORT: August 11, 1981 I. Primary Processing A. Addition of Lamina Scrap to Filler At the request of the Tobacco Utilization group, a test was run to determine the effects on blend characteristics of adding bright (BTBL) and burley (BUBL) lamina scraps from the Stemmery to cut filler. This technique would allow Stemmery by-products.to be directly used in blends instead of being converted'into a sheet product. The following three sizes of BTBL and'BUBL were used: - 5 mesh + 16 mesh, - 6 mesh + 16 mesh,, and - 8 mesh + 16 mesh. The different sizes of BTBL and BUBL were evaluated in Marlboro blends at twice the total utilization levels of bright and burley scrap, 1.1 and 1.3% in the total blend, respectively. The results showed no significant differences in CV between the three blends containing the lamina scrap and a control Marlboro blend to which no scrap was added. Sieve data showed the blend containing the 5 mesh scrap to average 5-8% higher in longs than the control and the two test blends containing the 6 and 8 mesh scrap. Visual inspection of the longs fractions of the blend's showed the 5 mesh blend to contain distinctly larger pieces of lamina than the control or the other two test blends. Smoking analyses on cigarettes made from these blends showed no significant differences among the different cigarettes. It was therefore recommended that a limited run be made in Manufacturing to confirm these results. B. The Effect of Lamina Size on Filler Size Another test was run at the request of the Tobacco Utilization group to determine the effect of lamina size on final filler size. In this ex- periment, five different sizes of bright strip (over 2" x 2", over 1" x 1", over 3/4° x 3/4", over 31" x;j", and over h° x 4") were obtained from the Stemmery and added to Marlboro strip blends at a 50% level. Sieve analyses of the cut filler samples showed that the addition of the largest two strip sizes to the Marlboro strip blend resulted in a slight increase of 1-3% in filler longs over a control Marlboro blend. Addition of the three smallest strip sizes to the Marlboro blend caused the % longs level to decrease. Thus, only strip remaining on a 1" x I"'or larger screen appears to increase filler % longs. C. WS Application In support of the Northwind test market production run, cleanup procedures were provided to the production personnel at the 20th Street facility. Swab samples taken from equipment and surrounding areas at 20th

J. F. Sherwood Mo. Progress'Rpt. (July, 1981) Page 2 August 11, 1981 Street after the test market run showed the cleanup procedures to be effective and'indicated no contamination problems with the WS. II. New Semiworks Startup and debugging of the Primary Pilot P1'ant equi!pment in the new R&D Semiworks was initiated, with checkout of the electrical and instrument systems in the control room being nearly complete. After the control room is operational, checkout of the process equipment and field instrumentation will begin. Processing of blends is expected to begin i'~n October. Installation of the flooring in the Make/Pack area is in progress and is scheduled for completion in the next two weeks. Delivery of rebuilt equipment from the York facility will then begin. ~ J. F. Sherwood JFS/jn