If you try to naively copy data off the drive it fails.
Don't panic. There is an option to dd that can help you get most of the data off:
dd if=/dev/sdc of=/home/me/sdc.dd conv=noerror,sync
dd if=/dev/vg0/failing-lvm of=/dev/vg0/new-lvm conv=noerror,sync
The file sdd.dd or new lvm volume could now be mounted:
mount -o loop -t ntfs /home/me/sdd.dd /mnt/old
Hopefully you can recover (most of) the files now.