# Relationship history for MSHA mine 0100096

Current hierarchy: **Wienerberger AG → General Shale Brick, Inc. → BORAL CLAY 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

- **operator_operates_mine:** Bickerstaff Clay Products Company Inc → BORAL CLAY PITS; 1950-01-01 to 1995-07-19; source msha-controller-operator-history
- **controller_controls_mine:** R H  Bickerstaff → BORAL CLAY PITS; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R H  Bickerstaff → Bickerstaff Clay Products Company Inc; 1950-01-01 to 1995-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Boral Limited → BORAL CLAY PITS; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Boral Bricks Inc → BORAL CLAY PITS; 1995-07-20 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Boral Limited → Boral Bricks Inc; 1995-07-20 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → BORAL CLAY PITS; 2002-07-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Brick LLC → BORAL CLAY PITS; 2017-04-01 to 2023-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Boral Industries Inc et al → BORAL CLAY PITS; 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_operator:** Lone Star Funds Inc et al → Meridian Brick LLC; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → BORAL CLAY PITS; 2021-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → Meridian Brick LLC; 2021-10-18 to 2023-03-29; source msha-controller-operator-history
- **operator_operates_mine:** General Shale Brick, Inc. → BORAL CLAY PITS; 2023-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → General Shale Brick, Inc.; 2023-03-30 to current/open; source msha-controller-operator-history