# Relationship history for MSHA mine 3101655

Current hierarchy: **Hoke D N → Hoke Contracting Company Inc → Brewer Sand 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:** Hoke Contracting Company Inc → Brewer Sand Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hoke D N → Brewer Sand Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hoke D N → Hoke Contracting Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history