# Relationship history for MSHA mine 1514169

Current hierarchy: **Colter John → Colter & Perry Coal Company Inc → Golden #1**

- 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:** Clay Cassius M → Golden #1; 1981-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Par Birdie Coal Company → Golden #1; 1983-08-01 to 1984-01-17; source msha-controller-operator-history
- **controller_controls_operator:** Clay Cassius M → Par Birdie Coal Company; 1983-08-01 to 1984-01-17; source msha-controller-operator-history
- **operator_operates_mine:** Colter & Perry Coal Company Inc → Golden #1; 1984-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colter John → Golden #1; 1984-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colter John → Colter & Perry Coal Company Inc; 1984-01-18 to current/open; source msha-controller-operator-history