Lziprecover is a data recovery tool and decompressor for files in the
Lzip compressed data format (.lz). Lziprecover is able to repair slightly
damaged files, produce a correct file by merging the good parts of two or
more damaged copies, extract data from damaged files, test file integrity,
remove the damaged members from multimember files, and more.

WWW: http://www.nongnu.org/lzip/lziprecover.html