We have examined the suggestion that an MO transition occurs between t
he 2819.6-keV 0- level of Yb-173 and the 0+ ground state by internal-c
onversion electron emission. Gamma rays, internal-conversion electrons
, and internal e+e- pairs were detected from the beta+ and electron ca
pture decay of two-day Lu-170 (0+). At an upper limit of 2 X 10(-8) el
ectron per Lu-170 decay, no evidence was obtained for MO decay of the
2819.6-keV level of Yb-170 by single-electron emission.