# Relationship history for MSHA mine 2402257

Current hierarchy: **Levi  Thompson → Plains Ready Mix, Inc. → Plains Ready Mix, Inc.**

- 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:** Felstet Concrete Products LLC → Plains Ready Mix, Inc.; 2002-01-01 to 2019-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Don  Felstet → Plains Ready Mix, Inc.; 2002-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Felstet → Felstet Concrete Products LLC; 2002-01-01 to 2019-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Range Materials, LLC → Plains Ready Mix, Inc.; 2019-08-21 to 2025-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Cripe et al → Plains Ready Mix, Inc.; 2019-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Cripe et al → Mountain Range Materials, LLC; 2019-08-21 to 2025-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Wriley et al → Mountain Range Materials, LLC; 2019-08-21 to 2025-05-08; source msha-controller-operator-history
- **controller_controls_operator:** William  Callison et al → Mountain Range Materials, LLC; 2019-08-21 to 2025-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Jeb  Santen et al → Mountain Range Materials, LLC; 2019-08-21 to 2025-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Plains Ready Mix, Inc. → Plains Ready Mix, Inc.; 2025-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Levi  Thompson → Plains Ready Mix, Inc.; 2025-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Levi  Thompson → Plains Ready Mix, Inc.; 2025-05-09 to current/open; source msha-controller-operator-history