Considered acquisition in OBI, but that is about taking possession. Physical extraction may involve taking pocession, but it may also just involve extraction of something that is already posessed (e.g. of dna from cells).

obsolete physical extraction process

A process that involves removing a material entity from its original site to another site.

1

Biocode Commons Ontology Hackathon

picking leaves from a plant

removing a fish from the ocean with a net

removing dna from cells