# Relationship history for MSHA mine 4801724

Current hierarchy: **Kurt  Croell → Croell Redi-Mix Inc → Douglas Rental 2**

- 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

- **controller_controls_mine:** Roger  Croell → Douglas Rental 2; 1950-01-01 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Menter Construction Company → Douglas Rental 2; 1979-01-01 to 2002-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Loftin → Douglas Rental 2; 2002-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Menter Sand & Gravel → Douglas Rental 2; 2008-01-17 to 2008-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Menter Construction Company → Menter Sand & Gravel; 2008-01-17 to 2002-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Loftin → Menter Sand & Gravel; 2008-01-17 to 2008-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Croell Redi-Mix Inc → Douglas Rental 2; 2008-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Croell → Croell Redi-Mix Inc; 2008-03-29 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Kurt  Croell → Douglas Rental 2; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Croell → Croell Redi-Mix Inc; 2014-01-01 to current/open; source msha-controller-operator-history