# Relationship history for MSHA mine 1514534

Current hierarchy: **Sanderson Lorin → Crickett Coal Company Inc → Mine #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

- **controller_controls_mine:** Johnson Elwood Et Al → Mine #1; 1982-11-01 to 1987-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Crickett Coal Company Inc → Mine #1; 1984-03-01 to 1987-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Elwood Et Al → Crickett Coal Company Inc; 1984-03-01 to 1987-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Steer Fork Mining Inc → Mine #1; 1987-01-05 to 1987-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Griffey Clyde → Mine #1; 1987-01-05 to 1987-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Griffey Clyde → Steer Fork Mining Inc; 1987-01-05 to 1987-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Steer Fork Mining Company → Mine #1; 1987-02-19 to 1988-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Bridgeman James Et Al → Mine #1; 1987-02-19 to 1989-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Bridgeman James Et Al → Steer Fork Mining Company; 1987-02-19 to 1988-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Ohio-Kentucky Commodities → Mine #1; 1988-02-22 to 1991-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Sanderson Lorin J-Jeff Riggs Et Al → Mine #1; 1988-02-22 to 1991-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Sanderson Lorin J-Jeff Riggs Et Al → Ohio-Kentucky Commodities; 1988-02-22 to 1991-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Circle A Coal Inc → Mine #1; 1991-03-20 to 1992-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Dye Litten Jimmy → Mine #1; 1991-03-20 to 1992-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Dye Litten Jimmy → Circle A Coal Inc; 1991-03-20 to 1992-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Crickett Coal Company Inc → Mine #1; 1992-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sanderson Lorin → Mine #1; 1992-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sanderson Lorin → Crickett Coal Company Inc; 1992-07-01 to current/open; source msha-controller-operator-history