# Relationship history for MSHA mine 0301250

Current hierarchy: **John W  De Haven → Cherokee Sand & Gravel LLC → Cherokee Sand & Gravel LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Viking Ready Mix Concrete → Cherokee Sand & Gravel LLC; 1977-10-01 to 1992-01-12; source msha-controller-operator-history
- **controller_controls_mine:** Connally John → Cherokee Sand & Gravel LLC; 1977-10-01 to 1992-01-12; source msha-controller-operator-history
- **controller_controls_operator:** Connally John → Viking Ready Mix Concrete; 1977-10-01 to 1992-01-12; source msha-controller-operator-history
- **operator_operates_mine:** B & B Sand & Gravel Inc → Cherokee Sand & Gravel LLC; 1992-01-13 to 2002-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Blevins → Cherokee Sand & Gravel LLC; 1992-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Blevins → B & B Sand & Gravel Inc; 1992-01-13 to 2002-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Bradford  Sand & Gravel → Cherokee Sand & Gravel LLC; 2002-04-24 to 2002-10-29; source msha-controller-operator-history
- **controller_controls_mine:** JOE  TURNER → Cherokee Sand & Gravel LLC; 2002-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JOE  TURNER → Bradford  Sand & Gravel; 2002-04-24 to 2002-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Cherokee Sand & Gravel LLC → Cherokee Sand & Gravel LLC; 2002-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John W  De Haven → Cherokee Sand & Gravel LLC; 2002-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  De Haven → Cherokee Sand & Gravel LLC; 2002-10-30 to current/open; source msha-controller-operator-history