# Relationship history for MSHA mine 3003314

Current hierarchy: **Sundy Lynn  Leitz → LEITZ TRUCKING CORP → LEITZ GRAVEL BED**

- 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:** Leitz Enterprises Inc → LEITZ GRAVEL BED; 2000-01-01 to 2016-03-31; source msha-controller-operator-history
- **controller_controls_mine:** John J  Leitz Sr → LEITZ GRAVEL BED; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John J  Leitz Sr → Leitz Enterprises Inc; 2000-01-01 to 2016-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Leitz Trucking Corp → LEITZ GRAVEL BED; 2016-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sundy Lynn  Leitz → LEITZ GRAVEL BED; 2016-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sundy Lynn  Leitz → Leitz Trucking Corp; 2016-04-01 to current/open; source msha-controller-operator-history