# Relationship history for MSHA mine 0801013

Current hierarchy: **Johnsen Ralph → South Fill Inc → Chapel Trail**

- 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

- **controller_controls_mine:** Elmore Robert → Chapel Trail; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hardrives Company → Chapel Trail; 1984-04-01 to 1985-12-08; source msha-controller-operator-history
- **controller_controls_operator:** Elmore Robert → Hardrives Company; 1984-04-01 to 1985-12-08; source msha-controller-operator-history
- **operator_operates_mine:** South Fill Inc → Chapel Trail; 1985-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnsen Ralph → Chapel Trail; 1985-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnsen Ralph → South Fill Inc; 1985-12-09 to current/open; source msha-controller-operator-history