# Relationship history for MSHA mine 2302555

Current hierarchy: **Tracy L  Bogler → Osage Fire Clay LLC → George**

- 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:** Osage Fire Clay LLC → George; 2021-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tracy L  Bogler → George; 2021-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy L  Bogler → Osage Fire Clay LLC; 2021-08-26 to current/open; source msha-controller-operator-history