Yes but that is for x86-64 CPU Architecture, the OP was asking about POWER PC which is completely different. As far as I know support for Linux on POWER PC was dropped after NBU 7.6.0.x/RHEL 6/SUSE 11. Also I am not sure if support was Little Endian (LE) or Big Endian (BE).
If you can get hold of say NBU 188.8.131.52 "CLIENTS2" media, you MAY just be able to get the POWERPC RHEL version to install on Centos but I would not bank on it. Also support will be non-existant.
Maybe you could use the inbuilt "tar" or "cpio" commands or export things to a supported platform?
Good luck, Andrew