# Relationship history for MSHA mine 2000237

Current hierarchy: **Wienerberger AG → General Shale Brick, Inc. → CORUNNA PLANT**

- 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:** U S Brick → CORUNNA PLANT; 1950-01-01 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Jannock Ltd → CORUNNA PLANT; 1950-01-01 to 2002-04-15; source msha-controller-operator-history
- **controller_controls_operator:** Jannock Ltd → U S Brick; 1950-01-01 to 1999-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Michigan Brick-Hanson → CORUNNA PLANT; 1999-05-14 to 2006-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → CORUNNA PLANT; 1999-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Michigan Brick-Hanson; 1999-05-14 to 2006-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → CORUNNA PLANT; 2002-04-16 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → U S Brick; 2002-04-16 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → CORUNNA PLANT; 2002-07-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Forterra Brick, LLC → CORUNNA PLANT; 2006-12-07 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Forterra Brick, LLC; 2006-12-07 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Jannock Ltd → Forterra Brick, LLC; 2006-12-07 to 2002-04-15; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → CORUNNA PLANT; 2007-08-23 to 2015-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → U S Brick; 2007-08-23 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Forterra Brick, LLC; 2007-08-23 to 2015-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Lone Star Funds → CORUNNA PLANT; 2015-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds → U S Brick; 2015-03-13 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds → Forterra Brick, LLC; 2015-03-13 to 2017-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Brick LLC → CORUNNA PLANT; 2017-04-01 to 2022-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Lone Star Funds Inc et al → CORUNNA PLANT; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds Inc et al → Meridian Brick LLC; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Boral Industries Inc et al → Meridian Brick LLC; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → CORUNNA PLANT; 2021-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → Meridian Brick LLC; 2021-10-18 to 2022-12-19; source msha-controller-operator-history
- **operator_operates_mine:** General Shale Brick, Inc. → CORUNNA PLANT; 2022-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → General Shale Brick, Inc.; 2022-12-20 to current/open; source msha-controller-operator-history