# Relationship history for MSHA mine 3102350

Current hierarchy: **Wienerberger AG → General Shale Brick, Inc. → Salisbury Plant and Pits**

- 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:** Wienerberger AG → Salisbury Plant and Pits; 2002-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Boral Industries Inc et al → Salisbury Plant and Pits; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → Salisbury Plant and Pits; 2021-10-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Brick, LLC → Salisbury Plant and Pits; 2022-05-03 to 2023-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Boral Industries Inc et al → Meridian Brick, LLC; 2022-05-03 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds Inc et al → Meridian Brick, LLC; 2022-05-03 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → Meridian Brick, LLC; 2022-05-03 to 2023-11-14; source msha-controller-operator-history
- **operator_operates_mine:** General Shale Brick, Inc. → Salisbury Plant and Pits; 2023-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → General Shale Brick, Inc.; 2023-11-15 to current/open; source msha-controller-operator-history