A former paper of me investigated the conditions which are required to get back the abundance of nuclei (Kiss 2014). According to this investigation the required neutron density (1010 cm-3-1015 cm-3) is available at the asymptotic giant branch (AGB) stars. How much is the AGB contribution, what part of stellar mass goes through the AGB evolution phase? From this what part returns into the interstellar medium (ISM)? Where is the Galactic Fe-60 formed? In this paper these questions are examined. The result is that most stellar matter was or is in AGB stars. The AGB contribution of interstellar medium is greater than the supernovae (SNII) contribution: that is, much more mass goes through AGB stars than core collapsing supernovae.
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