"Why a Defunct Miner Reinvented Itself as a Dollar General Landlord" (WSJ story).
The penultimate paragraph seems to indicate that they are NN leases.

They sold their mining assets for $223M and have invested $6.2M in commercial real estate earning $364k, so a \~5.9% cap rate.

The estate endeavored to earn interest rates exceeding what banks were offering. They looked at dozens of investment opportunities before settling on the commercial properties. *Sound familiar*?

[Full story](https://archive.ph/qBYNi).
[{"id": "iuovqb8", "text": "What\u2019s your point?", "replies": [], "depth": 1}]