When all files are downloaded and extracted, the file structure is as shown in contents.txt

These contents are archived in multi-volume tar files using the following command:

printf 'n Gibson_Iraq-%03d.tar\n' {2..1000} | tar -ML 200000 -cf Gibson_Iraq-001.tar Gibson_Iraq/

Note, only GNU tar version 1.23 or newer (e.g., Red Hat/CentOS Linux version 6.x contains tar version 1.23) may be used to create and extract the tar files. Older versions contain a bug and cannot properly extract files across volumes when long file paths/names are present. 

Contents in each tar file are shown in contents_tar.txt

You may only download the tar volume containing the files you need, then extract this single tar volume. If a file spans across multiple volumes, you'll need to download all related volumes and extract them together. For example, if you download Gibson_Iraq-480.tar to Gibson_Iraq-486.tar and want to extract all the contents in these volumes, run this command:

printf 'n Gibson_Iraq-%03d.tar\n' {481..486} | tar --extract --multi-volume --file=Gibson_Iraq-480.tar