# Relationship history for MSHA mine 1001995

Current hierarchy: **Custer County-Id → Lost River Highway District → PIONEER**

- 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:** Lost River Highway District → PIONEER; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Custer County-Id → PIONEER; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Custer County-Id → Lost River Highway District; 2001-02-01 to current/open; source msha-controller-operator-history