# Relationship history for MSHA mine 4404974

Current hierarchy: **Coleman Jeffery → Spotlight Coal Company Inc → No 2 Mine**

- 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:** P & D Coal Company Inc → No 2 Mine; 1978-03-01 to 1980-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Matney Perry & Donald → No 2 Mine; 1978-03-01 to 1981-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Matney Perry & Donald → P & D Coal Company Inc; 1978-03-01 to 1980-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Jeffery → No 2 Mine; 1978-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Spotlight Coal Company Inc → No 2 Mine; 1980-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Jeffery → Spotlight Coal Company Inc; 1980-03-12 to current/open; source msha-controller-operator-history