# Relationship history for MSHA mine 4102708

Current hierarchy: **Darnell James W → Bosque Gravel Inc → Bosque 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Bosque Gravel Inc → Bosque Gravel; 1950-01-01 to 1992-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Darnell James W → Bosque Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darnell James W → Bosque Gravel Inc; 1950-01-01 to 1992-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Barbrac Inc → Bosque Gravel; 1992-06-15 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Rutledge Bill R → Bosque Gravel; 1992-06-15 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Rutledge Bill R → Barbrac Inc; 1992-06-15 to 1993-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Bosque Gravel Inc → Bosque Gravel; 1993-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darnell James W → Bosque Gravel Inc; 1993-02-08 to current/open; source msha-controller-operator-history