# Relationship history for MSHA mine 1000891

Current hierarchy: **Ada County-Id → Ada County Highway District → Ten Mile 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 Paving & Asphalt Company → Ten Mile Pit; 1950-01-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Gillette Gary L → Ten Mile Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gillette Gary L → Boise Paving & Asphalt Company; 1950-01-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Ada County-Id → Ten Mile Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ada County Highway District → Ten Mile Pit; 1978-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ada County-Id → Ada County Highway District; 1978-09-16 to current/open; source msha-controller-operator-history