# Relationship history for MSHA mine 0801421

Current hierarchy: **Dixie County-FL → Dixie County → Bowlegs Rock 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

- **controller_controls_mine:** Dixie County-FL → Bowlegs Rock Pit; 1991-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dixie County → Bowlegs Rock Pit; 2018-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dixie County-FL → Dixie County; 2018-08-08 to current/open; source msha-controller-operator-history