Need help getting data off borked Mirror Set

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http://ubuntuforums.org – Hi, I built a system for a friend a cuple of years back. SSD for the system slices, and a mirrored pair of 3tb drives that I used to mount /home. For reasons that we couldn't prove, the system stopped booting. It would start the OS bootstrap and hang. A bit of troubleshooting and we figured that something had borked with the mirror set. The frustrating thing is that I cannot get the system to boot to a point where I can load mdadm to look at it. I have physically removed the drives from the box and attached them to a different system, but they can't recognize either drive. (Hardware)