# Relationship history for MSHA mine 2103058

Current hierarchy: **Kurt  Croell → Croell,Inc. → Lonning Sand & Gravel**

- 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

- **controller_controls_mine:** Roger  Croell → Lonning Sand & Gravel; 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Caledonia Ready Mix → Lonning Sand & Gravel; 1992-10-01 to 2016-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Gary J  Becker → Lonning Sand & Gravel; 1992-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary J  Becker → Caledonia Ready Mix; 1992-10-01 to 2016-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → Lonning Sand & Gravel; 2014-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Croell,Inc. → Lonning Sand & Gravel; 2016-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell,Inc.; 2016-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell,Inc.; 2016-05-12 to 2013-12-31; source msha-controller-operator-history