# Relationship history for MSHA mine 0400276

Current hierarchy: **CRH PLC → BoDean Company Inc → Blue Rock Quarry**

- 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:** Bramham Sand & Rock Products Inc → Blue Rock Quarry; 1950-01-01 to 1978-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Bramham David → Blue Rock Quarry; 1950-01-01 to 1978-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Bramham David → Bramham Sand & Rock Products Inc; 1950-01-01 to 1978-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Don Wesner Inc → Blue Rock Quarry; 1978-03-01 to 1997-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Don  Wesner → Blue Rock Quarry; 1978-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Wesner → Don Wesner Inc; 1978-03-01 to 1997-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Dean  Soiland → Blue Rock Quarry; 1989-04-01 to 2024-04-04; source msha-controller-operator-history
- **operator_operates_mine:** BoDean Company Inc → Blue Rock Quarry; 1997-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Soiland → BoDean Company Inc; 1997-07-18 to 2024-04-04; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Blue Rock Quarry; 2024-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → BoDean Company Inc; 2024-04-05 to current/open; source msha-controller-operator-history