# Relationship history for MSHA mine 1512427

Current hierarchy: **Randy L  Tackett → Pace Energies Inc → Sookeys Creek**

- 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:** Hess Jimmie Leon Et Al → Sookeys Creek; 1978-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Costain Group PLC → Sookeys Creek; 1978-10-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big Buck Coal Company Inc → Sookeys Creek; 1980-07-01 to 1980-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Hess Jimmie Leon Et Al → Big Buck Coal Company Inc; 1980-07-01 to 1980-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Lawson & Clark Construction Company Inc → Sookeys Creek; 1980-10-06 to 1981-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Emmett  Lawson → Sookeys Creek; 1980-10-06 to 1981-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Emmett  Lawson → Lawson & Clark Construction Company Inc; 1980-10-06 to 1981-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Don B Enterprises Inc → Sookeys Creek; 1981-04-01 to 1983-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Brent  Coleman et al → Sookeys Creek; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Coleman et al → Don B Enterprises Inc; 1981-04-01 to 1983-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Chapperal Coal Corp → Sookeys Creek; 1983-04-18 to 1984-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Costain Group PLC → Chapperal Coal Corp; 1983-04-18 to 1984-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Quality Coal Company Inc → Sookeys Creek; 1984-04-30 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Hess Jimmie Leon Et Al → Sookeys Creek; 1984-04-30 to 1985-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Hess Jimmie Leon Et Al → Quality Coal Company Inc; 1984-04-30 to 1985-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Pace Energies Inc → Sookeys Creek; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy L  Tackett → Sookeys Creek; 1985-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy L  Tackett → Pace Energies Inc; 1985-05-02 to current/open; source msha-controller-operator-history