# Relationship history for MSHA mine 4606328

Current hierarchy: **Witt Tommy L → Barrenshe Coal Inc → #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Barrenshe Coal Inc → #1; 1981-03-01 to 1990-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Muncy Carl → #1; 1981-03-01 to 1990-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Muncy Carl → Barrenshe Coal Inc; 1981-03-01 to 1990-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Barrenshe Coal Inc → #1; 1990-02-12 to 1991-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Muncy Billy → #1; 1990-02-12 to 1991-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Muncy Billy → Barrenshe Coal Inc; 1990-02-12 to 1991-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Barrenshe Coal Inc → #1; 1991-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Witt Tommy L → #1; 1991-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Witt Tommy L → Barrenshe Coal Inc; 1991-12-01 to current/open; source msha-controller-operator-history