# Relationship history for MSHA mine 4602481

Current hierarchy: **Law H Wayne → Premium Sewell Inc → Golden Ridge**

- 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:** S S Joe Burford Inc → Golden Ridge; 1950-01-01 to 1976-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Lucas Edsel L → Golden Ridge; 1950-01-01 to 1976-12-17; source msha-controller-operator-history
- **controller_controls_operator:** Lucas Edsel L → S S Joe Burford Inc; 1950-01-01 to 1976-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Valley Industries Inc → Golden Ridge; 1976-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S S Joe Burford Inc → Golden Ridge; 1976-12-18 to 1985-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Valley Industries Inc → S S Joe Burford Inc; 1976-12-18 to 1985-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Phoenix Resources Inc → Golden Ridge; 1985-03-15 to 1993-11-30; source msha-controller-operator-history
- **controller_controls_mine:** A F Budge Mining Ltd → Golden Ridge; 1985-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** A F Budge Mining Ltd → Phoenix Resources Inc; 1985-03-15 to 1993-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Premium Sewell Inc → Golden Ridge; 1993-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Law H Wayne → Golden Ridge; 1993-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Law H Wayne → Premium Sewell Inc; 1993-12-01 to current/open; source msha-controller-operator-history