# Relationship history for MSHA mine 2500210

Current hierarchy: **Gary O  Coutts; Terry O  Coutts → Coutts & Sons Company → Moeller Pit/Mill**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Coutts & Sons Company → Moeller Pit/Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary O  Coutts  et al → Moeller Pit/Mill; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary O  Coutts  et al → Coutts & Sons Company; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry O  Coutts  et al → Coutts & Sons Company; 1950-01-01 to current/open; source msha-controller-operator-history