# Relationship history for MSHA mine 4607377

Current hierarchy: **Bays David → Anna B Mining Inc → Raider Run Clifftop Strip**

- 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:** Trivett Carolyn → Raider Run Clifftop Strip; 1987-09-03 to 1988-09-21; source msha-controller-operator-history
- **operator_operates_mine:** Caroll Mining Company Inc → Raider Run Clifftop Strip; 1987-10-01 to 1988-09-21; source msha-controller-operator-history
- **controller_controls_operator:** Trivett Carolyn → Caroll Mining Company Inc; 1987-10-01 to 1988-09-21; source msha-controller-operator-history
- **operator_operates_mine:** Anna B Mining Inc → Raider Run Clifftop Strip; 1988-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bays David → Raider Run Clifftop Strip; 1988-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bays David → Anna B Mining Inc; 1988-09-22 to current/open; source msha-controller-operator-history