# Relationship history for MSHA mine 1509658

Current hierarchy: **Adkins Donnie → Three A Mining Company Inc → No 1 Mine**

- 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:** New South Mining Company Inc → No 1 Mine; 1976-04-30 to 1977-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Clevenger Roscoe → No 1 Mine; 1976-04-30 to 1977-04-13; source msha-controller-operator-history
- **controller_controls_operator:** Clevenger Roscoe → New South Mining Company Inc; 1976-04-30 to 1977-04-13; source msha-controller-operator-history
- **operator_operates_mine:** Three A Mining Company Inc → No 1 Mine; 1977-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Donnie → No 1 Mine; 1977-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Donnie → Three A Mining Company Inc; 1977-04-14 to current/open; source msha-controller-operator-history