The files contained in the ZIP file b11s06.zip are all of the
background and section files for AP-42 Section 11.6, Portland
Cement Manufacturing. Some of the files were used to generate
the background document and the Section. Other files were used
to perform other analysis that are not reflected in the Adobe 
Acrobat version of the background report. The following descriptions
indicate the use of the files and the software format of the files:

PTLNDCMT.BKR    This is the background report for the portland cement
                manufacturing section.

PC_T4-1.WK1    These Lotus 1,2,3 spreadsheet files contain the 
PC_T4-2.WK1    relevant information from the available source test 
PC_T4-3.WK1    reports that were used to develop the emission factors 
PC_T4-4.WK1    presented in the AP-42 Section and background report.
PC_T4-5.WK1
PC_T4-6.WK1
PC_T4-7.WK1
PC_T4-11.WK1
PC_T4-12.WK1
PC_T4-13.WK1
PC_T4-14.WK1
PC_T4-15.WK1
PC_T4-16.WK1
PC_T4-17.WK1
PC_T-APP.WK1

1982F4-1.PCX   These are graphic images that are contained in the 
1982F4-2.PCX   AP-42 section and background report.
1982F4-3.PCX
1982F4-4.PCX
1982F2-1.TIF

c11s06         This is the AP-42 section for portland cement
               manufacturing.  It is a WordPerfect 5.1 formatted
               document.

Cementr6.wk4   This is a Lotus 1,2,3 spreadsheet file that containes
               summary statistical information about emission factors
               presented in the AP-42 section and background report.
               This information can be used for uncertanty estimates.