Because we found that Sapphire Wire Breakers are broken in the curing process of the glueing,

(see k-log http://klog.icrr.u-tokyo.ac.jp/osl/?r=451)

we inspected the remaining eight Sapphire WBs.

I cannot find any obvious cracks in these.

Due to the sand surfaces of that, I cannot inspect micro-cracks.

[RELATED ENTRY]

http://www2.nao.ac.jp/~gw-elog/osl/?r=45

JGW-T1503409 http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3409