# Relationship history for MSHA mine 3605695

Current hierarchy: **Owens Alberta → S R P Coal Company Inc → Penoyer #5**

- 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:** S R P Coal Company Inc → Penoyer #5; 1975-10-01 to 1986-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Penoyer Robert C → Penoyer #5; 1975-10-01 to 1986-01-26; source msha-controller-operator-history
- **controller_controls_operator:** Penoyer Robert C → S R P Coal Company Inc; 1975-10-01 to 1986-01-26; source msha-controller-operator-history
- **operator_operates_mine:** S R P Coal Company Inc → Penoyer #5; 1986-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Owens Alberta → Penoyer #5; 1986-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Owens Alberta → S R P Coal Company Inc; 1986-01-27 to current/open; source msha-controller-operator-history