# Relationship history for MSHA mine 0102573

Current hierarchy: **Wright'S Auto Repair & Parts Inc → Coastal Asphalt & Construction Inc → Coastal Asphalt & Construction Incorpora**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Frase Inc → Coastal Asphalt & Construction Incorpora; 1984-04-01 to 1986-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Frase Marion A → Coastal Asphalt & Construction Incorpora; 1984-04-01 to 1986-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Frase Marion A → Frase Inc; 1984-04-01 to 1986-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Asphalt & Construction Inc → Coastal Asphalt & Construction Incorpora; 1986-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wright'S Auto Repair & Parts Inc → Coastal Asphalt & Construction Incorpora; 1986-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wright'S Auto Repair & Parts Inc → Coastal Asphalt & Construction Inc; 1986-10-15 to current/open; source msha-controller-operator-history