Twin directories of 30x:

[DIR]  ftp://129.102.1.25/pub/scientificlinux/scientific/30x/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/scientific/30x/
[DIR]  ftp://ftp.phys.ttu.edu/pub/SL/30x/
[DIR]  ftp://ftp2.au.freebsd.org/pub/la1/scientific/30x/
[DIR]  ftp://ftp.uni-jena.de/pub/linux/MIRROR.scientific/30x/
[DIR]  ftp://ftp.sara.nl/pub/scientific_linux/30x/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/scientific/30x/
[DIR]  ftp://ftp.msiu.ru/pub/mirrors/ftp.scientificlinux.org/linux/scientific/30x/