# Relationship history for MSHA mine 0801105

Current hierarchy: **Fina Stanley → Best Sand Inc → Hardrives 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

- **operator_operates_mine:** Best Sand Inc → Hardrives Pit; 1988-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fina Stanley Et Al → Hardrives Pit; 1988-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fina Stanley Et Al → Best Sand Inc; 1988-07-01 to current/open; source msha-controller-operator-history