# Relationship history for MSHA mine 3003332

Current hierarchy: **Keith  Kortright; Gary  Kortright → MOMBACCUS EXCAVATING INC → MOMBACCUS GRAVEL**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Mombaccus Excavating Inc → MOMBACCUS GRAVEL; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Kortright et al → MOMBACCUS GRAVEL; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Kortright et al → Mombaccus Excavating Inc; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Kortright et al → Mombaccus Excavating Inc; 2000-05-01 to current/open; source msha-controller-operator-history