# Relationship history for MSHA mine 3901597

Current hierarchy: **Dominic  Heck → Diamond H Service, LLC → Plant #2**

- 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

- **controller_controls_mine:** Dominic  Heck → Plant #2; 2011-11-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Diamond H Service, LLC → Plant #2; 2013-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dominic  Heck → Diamond H Service, LLC; 2013-04-11 to current/open; source msha-controller-operator-history