# Relationship history for MSHA mine 1000934

Current hierarchy: **Terry  Mc Entee; Pat  Mc Entee → Boise Sand & Gravel Company → Cole Road 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:** Boise Sand & Gravel Company → Cole Road Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pat  Mc Entee  et al → Cole Road Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pat  Mc Entee  et al → Boise Sand & Gravel Company; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Mc Entee  et al → Boise Sand & Gravel Company; 1950-01-01 to current/open; source msha-controller-operator-history