# Relationship history for MSHA mine 0800266

Current hierarchy: **Hubert Lamar  Sikes → Sikes Concrete Pipe Company Inc → Calloway Pit**

- 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

- **operator_operates_mine:** Calloway Sand Company → Calloway Pit; 1950-01-01 to 1985-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Sikes Rosalie F → Calloway Pit; 1950-01-01 to 1985-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Sikes Rosalie F → Calloway Sand Company; 1950-01-01 to 1985-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Sikes Concrete Pipe Company Inc → Calloway Pit; 1985-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hubert Lamar  Sikes → Calloway Pit; 1985-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hubert Lamar  Sikes → Sikes Concrete Pipe Company Inc; 1985-01-15 to current/open; source msha-controller-operator-history