# Relationship history for MSHA mine 5001453

Current hierarchy: **Hawley Resource Group Inc → Hawley Resource Group Inc → Golden Zone**

- 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

- **controller_controls_mine:** Enserch Corp → Golden Zone; 1982-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Enserch Exploration Incorporated → Golden Zone; 1983-08-01 to 1988-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Enserch Corp → Enserch Exploration Incorporated; 1983-08-01 to 1988-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Hawley Resource Group Inc → Golden Zone; 1988-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hawley Resource Group Inc → Golden Zone; 1988-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hawley Resource Group Inc → Hawley Resource Group Inc; 1988-05-15 to current/open; source msha-controller-operator-history