The sampling protocol is based on obtaining individualized bone fragments, prioritizing those that are already fragmented by taphonomic deposition.

We don't break the bones to obtain a sample if it is not completely necessary. In those rare cases that it's necessary, we always look for a part of it that doesn't present any identifying signal that may be required for further osteoarchaeological studies.

Fragments of long bones diaphysis are always preferable, since the bone presents a thicker compact layer allowing us to obtain more bone material in a smaller fragment.

The chosen bone fragment mustn't be covered with any type of consolidant or treated with any chemical to reduce the risk of contamination.