# Relationship history for MSHA mine 4606800

Current hierarchy: **Maust James W → Colonial Coal Inc → Holt 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Colonial Coal Inc → Holt Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Maust James W → Holt Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maust James W → Colonial Coal Inc; 1984-06-01 to current/open; source msha-controller-operator-history