# Relationship history for MSHA mine 3610065

Current hierarchy: **Nathan S  Shingara → B & M Coal → B & M Coal**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** B and M Coal LLC → B & M Coal; 2013-05-29 to 2014-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Bruce E  Wyland et al → B & M Coal; 2013-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce E  Wyland et al → B and M Coal LLC; 2013-05-29 to 2014-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Michael F  Nairns et al → B and M Coal LLC; 2013-05-29 to 2014-04-03; source msha-controller-operator-history
- **operator_operates_mine:** B & M Coal → B & M Coal; 2014-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nathan S  Shingara → B & M Coal; 2014-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan S  Shingara → B & M Coal; 2014-04-04 to current/open; source msha-controller-operator-history