# Relationship history for MSHA mine 1513426

Current hierarchy: **Smith Claude → Hot Rocks Coal Company Inc → No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Gray Herbert → No 1; 1978-03-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hot Rock Coal Inc → No 1; 1982-03-01 to 1982-06-07; source msha-controller-operator-history
- **controller_controls_mine:** Corum Bess → No 1; 1982-03-01 to 1982-06-07; source msha-controller-operator-history
- **controller_controls_operator:** Corum Bess → Hot Rock Coal Inc; 1982-03-01 to 1982-06-07; source msha-controller-operator-history
- **operator_operates_mine:** Wooton Creek Mining Company Inc → No 1; 1982-06-08 to 1984-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Gray Herbert → Wooton Creek Mining Company Inc; 1982-06-08 to 1984-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Wooten Creek Mining Company Inc → No 1; 1984-04-17 to 1984-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Baker Gary N → No 1; 1984-04-17 to 1984-08-23; source msha-controller-operator-history
- **controller_controls_operator:** Baker Gary N → Wooten Creek Mining Company Inc; 1984-04-17 to 1984-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Hot Rocks Coal Company Inc → No 1; 1984-08-24 to 1988-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Smith Claude → No 1; 1984-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Claude → Hot Rocks Coal Company Inc; 1984-08-24 to 1988-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Hot Rocks Coal Company Inc → No 1; 1988-08-03 to 1989-07-02; source msha-controller-operator-history
- **controller_controls_mine:** Baker Fred → No 1; 1988-08-03 to 1989-07-02; source msha-controller-operator-history
- **controller_controls_operator:** Baker Fred → Hot Rocks Coal Company Inc; 1988-08-03 to 1989-07-02; source msha-controller-operator-history
- **operator_operates_mine:** Hot Rocks Coal Company Inc → No 1; 1989-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Smith Claude → Hot Rocks Coal Company Inc; 1989-07-03 to current/open; source msha-controller-operator-history