# Relationship history for MSHA mine 2402270

Current hierarchy: **Kip  Mc Clendon → Bitterroot Rock Products → Screening Plant #1**

- 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:** Kip  Mc Clendon → Screening Plant #1; 1998-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bitterroot Rock Products → Screening Plant #1; 2002-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kip  Mc Clendon → Bitterroot Rock Products; 2002-04-13 to current/open; source msha-controller-operator-history