# Relationship history for MSHA mine 3304362

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Midwest Agg, Inc. → Eagle Crushed Stone**

- 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:** Hanson PLC → Eagle Crushed Stone; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Eagle Crushed Stone-Div/Davon Inc → Eagle Crushed Stone; 1995-10-01 to 2001-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Davon Inc → Eagle Crushed Stone; 1995-10-01 to 2001-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Davon Inc → Eagle Crushed Stone-Div/Davon Inc; 1995-10-01 to 2001-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates Davon, LLC → Eagle Crushed Stone; 2001-03-31 to 2023-03-06; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Eagle Crushed Stone; 2001-03-31 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates Davon, LLC; 2001-03-31 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Eagle Crushed Stone; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates Davon, LLC; 2007-08-23 to 2023-03-06; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Midwest Agg, Inc. → Eagle Crushed Stone; 2023-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Midwest Agg, Inc.; 2023-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Midwest Agg, Inc.; 2023-03-07 to 2007-08-22; source msha-controller-operator-history