# Relationship history for MSHA mine 4605269

Current hierarchy: **Graybeal Carl N → Indian Creek Coal Company → No 14 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Graybeal Carl N Et Al → No 14 Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Indian Creek Coal Company → No 14 Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graybeal Carl N Et Al → Indian Creek Coal Company; 1976-09-01 to current/open; source msha-controller-operator-history