# Relationship history for MSHA mine 1000344

Current hierarchy: **Mike  Turner → Turner Sand & Gravel Inc → HARRIS 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 → HARRIS PIT; 1950-01-01 to 1988-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Gillette Gary L → HARRIS 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 1988-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Turner Sand & Gravel Inc → HARRIS PIT; 1988-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Turner → HARRIS PIT; 1988-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Turner → Turner Sand & Gravel Inc; 1988-06-15 to current/open; source msha-controller-operator-history