Who acquired HO&M?: HO&M was acquired into Liquidated, which is the current successor entity in the chain tracked by the OGLandman M&A directory.
Is HO&M still an independent company?: No. HO&M is no longer independent; it is now part of Liquidated.

Tracing a mineral owner's company?

Scout CRM carries corporate lineage in owner records so you know which successor entity a mineral interest rolls up to today.