# Relationship history for MSHA mine 4801923

Current hierarchy: **Toby  Merritt → Flying Heart Gravel LLC → Flying Heart Gravel 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Flying Heart Gravel LLC → Flying Heart Gravel Pit; 2026-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Toby  Merritt → Flying Heart Gravel Pit; 2026-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Toby  Merritt → Flying Heart Gravel LLC; 2026-07-08 to current/open; source msha-controller-operator-history