Twin directories of chem:

[DIR]  ftp://ftp.ryukoku.ac.jp/Ryukoku/pub/chem/
[DIR]  ftp://ftp.csufresno.edu/pub/class/chem/
[DIR]  ftp://134.121.1.1/.snapshot/nightly.3/pub/chem/
[DIR]  ftp://134.121.1.1/pub/chem/
[DIR]  ftp://134.121.1.1/.snapshot/nightly.2/pub/chem/
[DIR]  ftp://134.121.1.1/.snapshot/nightly.1/pub/chem/
[DIR]  ftp://134.121.1.1/.snapshot/nightly.0/pub/chem/
[DIR]  ftp://134.121.1.1/.snapshot/hourly.1/pub/chem/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/win3/chem/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/chem/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/chem/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/chem/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/win3/chem/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/chem/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/chem/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/chem/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/chem/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/win3/chem/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/chem/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/chem/
[DIR]  ftp://ftp.uni-stuttgart.de/pub/systems/acorn/acornet/short/sci/chem/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/os2/apps/science/chem/
[DIR]  ftp://134.121.1.56/pub/chem/
[DIR]  ftp://134.121.1.56/.snapshot/nightly.3/pub/chem/
[DIR]  ftp://134.121.1.56/.snapshot/nightly.0/pub/chem/
[DIR]  ftp://134.121.1.56/.snapshot/hourly.0/pub/chem/
[DIR]  ftp://134.121.1.56/.snapshot/nightly.1/pub/chem/
[DIR]  ftp://134.121.1.56/.snapshot/nightly.2/pub/chem/
[DIR]  ftp://ftp.dkrz.de/pub/Outgoing/niemeier/nick/chem/
[DIR]  ftp://ftp.jate.u-szeged.hu/pub/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/winxp/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/win95/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/winnt/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/macppc/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/win3/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/handheld/handheld/chem/
[DIR]  ftp://ftp.cyf-kr.edu.pl/pub/mirror/Simtel.Net/mobile/chem/
[DIR]  ftp://ftp.pmel.noaa.gov/vents/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/win95/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/winnt/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/winxp/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/handheld/handheld/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/handheld/chem/
[DIR]  ftp://ftp.anu.edu.au/mnt/disk2/pc/simtelnet/win3/chem/
[DIR]  ftp://ftp.pmodwrc.ch/pub/rozanov/socol_code/chem/
[DIR]  ftp://128.197.27.19/pub/mirrors/simtelnet/handheld/handheld/chem/
[DIR]  ftp://128.197.27.19/pub/mirrors/simtelnet/win3/chem/
[DIR]  ftp://128.197.27.19/pub/mirrors/simtelnet/win95/chem/
[DIR]  ftp://128.197.27.19/pub/mirrors/simtelnet/winnt/chem/
[DIR]  ftp://128.197.27.19/pub/mirrors/simtelnet/winxp/chem/