# Relationship history for MSHA mine 4202792

Current hierarchy: **Lorin  Harker → Solid Crushing, LLC → Little Creek Mesa 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:** Little Creek Crushing → Little Creek Mesa Pit; 2025-08-31 to 2026-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Richard Smith Fischer → Little Creek Mesa Pit; 2025-08-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard Smith Fischer → Little Creek Crushing; 2025-08-31 to 2026-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Solid Crushing, LLC → Little Creek Mesa Pit; 2026-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lorin  Harker → Little Creek Mesa Pit; 2026-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lorin  Harker → Solid Crushing, LLC; 2026-08-13 to current/open; source msha-controller-operator-history