# Relationship history for MSHA mine 1400413

Current hierarchy: **SCIH Salt Holdings, Inc → Lyons Salt Company → Lyons Mine**

- 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:** American Salt Company → Lyons Mine; 1950-01-01 to 1988-03-10; source msha-controller-operator-history
- **controller_controls_mine:** General Host Corp → Lyons Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Host Corp → American Salt Company; 1950-01-01 to 1988-03-10; source msha-controller-operator-history
- **operator_operates_mine:** North American Salt Company → Lyons Mine; 1988-03-11 to 1990-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Harris Chemical Group → Lyons Mine; 1988-03-11 to 2001-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Harris Chemical Group → North American Salt Company; 1988-03-11 to 1990-11-19; source msha-controller-operator-history
- **operator_operates_mine:** Lyons Salt Company → Lyons Mine; 1990-11-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peter E  Powell → Lyons Mine; 1990-11-20 to 2015-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Peter E  Powell → Lyons Salt Company; 1990-11-20 to 2015-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Compass Minerals International, Inc. → Lyons Mine; 2001-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Compass Minerals International, Inc. → North American Salt Company; 2001-11-28 to 1990-11-19; source msha-controller-operator-history
- **controller_controls_mine:** Kissner Group Holdings LP → Lyons Mine; 2015-10-26 to 2021-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Kissner Group Holdings LP → Lyons Salt Company; 2015-10-26 to 2021-06-12; source msha-controller-operator-history
- **controller_controls_mine:** SCIH Salt Holdings, Inc → Lyons Mine; 2021-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** SCIH Salt Holdings, Inc → Lyons Salt Company; 2021-06-13 to current/open; source msha-controller-operator-history