# Relationship history for MSHA mine 4605304

Current hierarchy: **Templeman Michael → Templeman Construction Company Inc → Spring Fork Mine 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

- **operator_operates_mine:** Pioneer Company → Spring Fork Mine No 1; 1976-10-01 to 1980-01-27; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Dean → Spring Fork Mine No 1; 1976-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Dean → Pioneer Company; 1976-10-01 to 1980-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Dooley Coal Company → Spring Fork Mine No 1; 1980-01-28 to 1985-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Dooley Carl A → Spring Fork Mine No 1; 1980-01-28 to 1985-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Dooley Carl A → Dooley Coal Company; 1980-01-28 to 1985-11-07; source msha-controller-operator-history
- **operator_operates_mine:** Tamica Energies Inc → Spring Fork Mine No 1; 1985-11-08 to 1986-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Tackett Vernon W & Vernon E → Spring Fork Mine No 1; 1985-11-08 to 1986-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Tackett Vernon W & Vernon E → Tamica Energies Inc; 1985-11-08 to 1986-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Templeman Construction Company Inc → Spring Fork Mine No 1; 1986-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Templeman Michael → Spring Fork Mine No 1; 1986-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Templeman Michael → Templeman Construction Company Inc; 1986-02-26 to current/open; source msha-controller-operator-history