# Relationship history for MSHA mine 4202135

Current hierarchy: **Jarold  Leavitt → Gunlock Rock → Gunlock Rock**

- 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:** Jay Leavitt → Gunlock Rock; 1996-04-01 to 1997-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Jay  Leavitt → Gunlock Rock; 1996-04-01 to 1997-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Leavitt → Jay Leavitt; 1996-04-01 to 1997-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Gunlock Rock → Gunlock Rock; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jay  Leavitt → Gunlock Rock; 1997-07-01 to 2021-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Leavitt → Gunlock Rock; 1997-07-01 to 2021-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Jarold  Leavitt → Gunlock Rock; 2021-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jarold  Leavitt → Gunlock Rock; 2021-05-04 to current/open; source msha-controller-operator-history