# Relationship history for MSHA mine 1001571

Current hierarchy: **Hohman Cliff C → Silver Butte Mining Company Inc → Brown Bear Mine**

- 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

- **controller_controls_mine:** Moyle Carl Sr → Brown Bear Mine; 1950-01-01 to 1983-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Moyle Moyle & Moyle → Brown Bear Mine; 1982-06-01 to 1983-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Moyle Carl Sr → Moyle Moyle & Moyle; 1982-06-01 to 1983-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Silver Butte Mining Company Inc → Brown Bear Mine; 1983-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hohman Cliff C → Brown Bear Mine; 1983-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hohman Cliff C → Silver Butte Mining Company Inc; 1983-09-15 to current/open; source msha-controller-operator-history