# Relationship history for MSHA mine 1516229

Current hierarchy: **Price Thomas G → Britestar Mining Incorported → #2 Surface**

- 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:** Price Robert T → #2 Surface; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Britestar Mining Inc → #2 Surface; 1987-11-01 to 1988-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Gwen → #2 Surface; 1987-11-01 to 1988-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Gwen → Britestar Mining Inc; 1987-11-01 to 1988-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Coal Power Inc → #2 Surface; 1988-05-11 to 1988-08-29; source msha-controller-operator-history
- **controller_controls_operator:** Price Robert T → Coal Power Inc; 1988-05-11 to 1988-08-29; source msha-controller-operator-history
- **operator_operates_mine:** Britestar Mining Incorported → #2 Surface; 1988-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Price Thomas G → #2 Surface; 1988-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Price Thomas G → Britestar Mining Incorported; 1988-08-30 to current/open; source msha-controller-operator-history