# Relationship history for MSHA mine 4403878

Current hierarchy: **Reisert John → Eastern Energy Resources Inc → No 1 Strip**

- 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:** Ventura Coal Company → No 1 Strip; 1974-01-01 to 1975-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Ventura Coal Company → No 1 Strip; 1974-01-01 to 1975-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Ventura Coal Company → Ventura Coal Company; 1974-01-01 to 1975-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Resources Inc → No 1 Strip; 1975-09-02 to 1976-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Kincer Albert J → No 1 Strip; 1975-09-02 to 1979-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Kincer Albert J → Eastern Energy Resources Inc; 1975-09-02 to 1976-11-23; source msha-controller-operator-history
- **operator_operates_mine:** B & B Coal Company → No 1 Strip; 1976-11-24 to 1977-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Bolling Jack → No 1 Strip; 1976-11-24 to 1977-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Bolling Jack → B & B Coal Company; 1976-11-24 to 1977-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Resources Inc → No 1 Strip; 1977-07-25 to 1979-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Kincer Albert J → Eastern Energy Resources Inc; 1977-07-25 to 1979-05-23; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Energy Resources Inc → No 1 Strip; 1979-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reisert John → No 1 Strip; 1979-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reisert John → Eastern Energy Resources Inc; 1979-05-24 to current/open; source msha-controller-operator-history