Help Identifying Peaks in Radiacode 102 Spectrum from a Lead-Shielded Enclosure

Hey everyone,

I recently molded some lead bricks and built a small lead-shielded enclosure just big enough to fit my Radiacode 102 inside. I ran a spectrum measurement inside this setup and got a reading of ~10 CPM, which is pretty low, as expected. However, I'm seeing some peaks in the spectrum that I can't directly identify using the built-in library.

A few details:

The lead bricks were made from scrap lead I melted and cast myself.

The measurement was taken with the Radiacode 102 completely enclosed inside the lead structure.

Background radiation outside the enclosure is significantly higher, as expected.