# Relationship history for MSHA mine 4607912

Current hierarchy: **Jeffrey H  Rose → J C B Mining Inc → J C B 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Hardesty John R Jr-Larry A Myers Et Al → J C B No 2 Mine; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Loyal G  Forman Jr → J C B No 2 Mine; 1989-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Preston Energy Inc → J C B No 2 Mine; 1990-07-01 to 1992-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr-Larry A Myers Et Al → Preston Energy Inc; 1990-07-01 to 1992-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Lenox Mining Company Inc → J C B No 2 Mine; 1992-09-01 to 1995-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Polce Larry Joe → J C B No 2 Mine; 1992-09-01 to 1995-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Polce Larry Joe → Lenox Mining Company Inc; 1992-09-01 to 1995-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Kingwood Coal Company → J C B No 2 Mine; 1995-03-13 to 1995-04-17; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → J C B No 2 Mine; 1995-03-13 to 1995-04-17; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Kingwood Coal Company; 1995-03-13 to 1995-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Jcb Mining Inc → J C B No 2 Mine; 1995-04-18 to 1995-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Loyal G  Forman Jr → Jcb Mining Inc; 1995-04-18 to 1995-10-02; source msha-controller-operator-history
- **operator_operates_mine:** J C B Mining Inc → J C B No 2 Mine; 1995-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey H  Rose → J C B No 2 Mine; 1995-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey H  Rose → J C B Mining Inc; 1995-10-03 to current/open; source msha-controller-operator-history