On 26/03/2018 15:02, Marland wrote:


According to my other half eggshells will only get broken down efficiently
in a compost bin/heap if you are prepared to pulverise them into really
small fragments first.
Something to do with the ability of worms to ingest material to digest it,
their mouths dont have teeth so all matter has to be soft or small enough
to be drawn in by the mouth muscles .
Eggshells just broken in half and chucked in the compost are just too
large.


The facilities used by councils for food waste are somewhat different
from a compost bin/heap. They start by shredding/pulping the material.
As that includes beef bones there's not much chance of eggshells
surviving in large lumps. It's then composted (at up to 60 or 70
degrees) for 4 weeks.

--
Robin
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