# Relationship history for MSHA mine 2900170

Current hierarchy: **Intrepid Potash Inc → Intrepid Potash-New Mexico, LLC → Intrepid Potash East**

- 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:** Mississippi Potash Inc → Intrepid Potash East; 1950-01-01 to 1985-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Mississippi Chemical Corp → Intrepid Potash East; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mississippi Chemical Corp → Mississippi Potash Inc; 1950-01-01 to 1985-04-04; source msha-controller-operator-history
- **operator_operates_mine:** New Mexico Potash Corp → Intrepid Potash East; 1985-04-05 to 1986-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Vertac Chemical Corp → Intrepid Potash East; 1985-04-05 to 1986-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Vertac Chemical Corp → New Mexico Potash Corp; 1985-04-05 to 1986-06-30; source msha-controller-operator-history
- **operator_operates_mine:** New Mexico Potash Corp → Intrepid Potash East; 1986-07-01 to 1996-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Cedar Chemical Corp → Intrepid Potash East; 1986-07-01 to 1996-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Cedar Chemical Corp → New Mexico Potash Corp; 1986-07-01 to 1996-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Mississippi Potash Inc → Intrepid Potash East; 1996-08-16 to 2004-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Mississippi Chemical Corp → Mississippi Potash Inc; 1996-08-16 to 2004-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Intrepid Potash-New Mexico, LLC → Intrepid Potash East; 2004-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hugh E  Harvey et al → Intrepid Potash East; 2004-03-01 to 2022-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Hugh E  Harvey et al → Intrepid Potash-New Mexico, LLC; 2004-03-01 to 2022-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Robert P  Jornayvaz III → Intrepid Potash East; 2022-02-26 to 2025-01-16; source msha-controller-operator-history
- **controller_controls_operator:** Robert P  Jornayvaz III → Intrepid Potash-New Mexico, LLC; 2022-02-26 to 2025-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Intrepid Potash Inc → Intrepid Potash East; 2025-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Intrepid Potash Inc → Intrepid Potash-New Mexico, LLC; 2025-01-17 to current/open; source msha-controller-operator-history