# Relationship history for MSHA mine 2302614

Current hierarchy: **Brice  Fischer → Fischer Minerals LLC → Whetstone**

- 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

- **controller_controls_mine:** Brice  Fischer → Whetstone; 2026-03-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fischer Minerals LLC → Whetstone; 2026-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brice  Fischer → Fischer Minerals LLC; 2026-08-13 to current/open; source msha-controller-operator-history