# Relationship history for MSHA mine 1201846

Current hierarchy: **Mullins Rod → Black Gold Associates Inc → Blackgold Assoc Inc**

- 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:** Blackfoot Inc → Blackgold Assoc Inc; 1981-07-01 to 1985-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Davis Russell E → Blackgold Assoc Inc; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Davis Russell E → Blackfoot Inc; 1981-07-01 to 1985-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Indiana Fines Inc → Blackgold Assoc Inc; 1985-04-17 to 1986-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Aaron Alber → Blackgold Assoc Inc; 1985-04-17 to 1986-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Aaron Alber → Indiana Fines Inc; 1985-04-17 to 1986-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Black Gold Associates Inc → Blackgold Assoc Inc; 1986-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Rod → Blackgold Assoc Inc; 1986-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Rod → Black Gold Associates Inc; 1986-10-02 to current/open; source msha-controller-operator-history