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linux - How to recover data from a corrupted ext3 partition?

A server of mine had a drive failure of some sort which caused the OS (CentOS 5) to crash and stop working (it refuses to boot).



So we put another drive with a working OS and from there we try to mount the partitions in the old drive.



Most partitions mount fine except for one: the /var partition, where my MySQL tables reside.
When I try to mount that one, I see these errors with dmesg:





sd 0:0:1:0: Unhandled sense code
sd 0:0:1:0: SCSI error: return code = 0x08100002
Result: hostbyte=invalid driverbyte=DRIVER_SENSE,SUGGEST_OK
sdb: Current: sense key: Medium Error
Add. Sense: Unrecovered read error



Info fld=0x4a47e
JBD: Failed to read block at offset 9863
JBD: recovery failed
EXT3-fs: error loading journal.




Is there a way I can recover the data in that partition?






EDIT:
As requested, the output of tune2fs -l /dev/sdb2 is:



tune2fs 1.39 (29-May-2006)
Filesystem volume name:   /var1
Last mounted on:          
Filesystem UUID:          d84f5181-24f3-40ce-9eaa-601ae5ae33bd
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file
Default mount options:    user_xattr acl

Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              26214400
Block count:              26214063
Reserved block count:     1310703
Free blocks:              25127226
Free inodes:              26213665
First block:              0
Block size:               4096

Fragment size:            4096
Reserved GDT blocks:      1017
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         32768
Inode blocks per group:   1024
Filesystem created:       Thu May 13 18:14:28 2010
Last mount time:          Thu Nov 29 12:52:00 2012
Last write time:          Wed Mar 27 20:29:28 2013
Mount count:              15

Maximum mount count:      -1
Last checked:             Thu May 13 18:14:28 2010
Check interval:           0 ()
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      35f38c48-3933-4c99-bde2-63b0eccf200d

Journal backup:           inode blocks




EDIT 2:
As suggested by @Hartmut, I run fsck.ext3 /dev/sdb2 with the following result:



e2fsck 1.39 (29-May-2006)
/var1: recovering journal
/var1: Attempt to read block from filesystem resulted in short read while reading block 11931


JBD: Failed to read block at offset 9863
fsck.ext3: No such device or address while trying to re-open /var1
e2fsck: io manager magic bad!

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