# Relationship history for MSHA mine 4202431

Current hierarchy: **Horizon Corporation → Milford Mining Company Utah, LLC → OK and Hidden Treasure**

- 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:** Western Utah Copper Company → OK and Hidden Treasure; 2006-03-08 to 2011-10-27; source msha-controller-operator-history
- **controller_controls_mine:** Mark D  Dotson → OK and Hidden Treasure; 2006-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark D  Dotson → Western Utah Copper Company; 2006-03-08 to 2011-10-27; source msha-controller-operator-history
- **operator_operates_mine:** CS Mining, LLC → OK and Hidden Treasure; 2011-10-28 to 2017-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Skye Minerals Partners LLC et al → OK and Hidden Treasure; 2011-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Skye Minerals Partners LLC et al → CS Mining, LLC; 2011-10-28 to 2017-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Milford Mining Company Utah, LLC → OK and Hidden Treasure; 2017-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ultimate Zenith LTD et al → OK and Hidden Treasure; 2017-08-29 to 2023-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Ultimate Zenith LTD et al → Milford Mining Company Utah, LLC; 2017-08-29 to 2023-05-02; source msha-controller-operator-history
- **controller_controls_operator:** May Pacific LTD et al → Milford Mining Company Utah, LLC; 2017-08-29 to 2023-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Corporation → OK and Hidden Treasure; 2023-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Corporation → Milford Mining Company Utah, LLC; 2023-05-03 to current/open; source msha-controller-operator-history