# Relationship history for MSHA mine 4401982

Current hierarchy: **Edward  Horn → Horn Construction Company Inc → Surface Mine No 11**

- 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:** Edward  Horn → Surface Mine No 11; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Burnrite Coal Company → Surface Mine No 11; 1950-01-01 to 1982-08-09; source msha-controller-operator-history
- **controller_controls_mine:** Alvis James A Jr → Surface Mine No 11; 1950-01-01 to 1982-08-09; source msha-controller-operator-history
- **controller_controls_operator:** Alvis James A Jr → Burnrite Coal Company; 1950-01-01 to 1982-08-09; source msha-controller-operator-history
- **operator_operates_mine:** Horn Construction Company Inc → Surface Mine No 11; 1982-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Horn → Horn Construction Company Inc; 1982-08-10 to current/open; source msha-controller-operator-history