# Relationship history for MSHA mine 1302221

Current hierarchy: **Brickworks Limited → Glen-Gery Corporation → United Brick Pit**

- 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:** R G Elder & Son Inc → United Brick Pit; 1998-10-01 to 1999-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Jared  Elder  et al → United Brick Pit; 1998-10-01 to 1999-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Jared  Elder  et al → R G Elder & Son Inc; 1998-10-01 to 1999-09-14; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → United Brick Pit; 1999-05-17 to 2015-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Marker Services Inc → United Brick Pit; 1999-09-15 to 2003-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Marker → United Brick Pit; 1999-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Marker → Marker Services Inc; 1999-09-15 to 2003-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Norman P  Mahoney et al → United Brick Pit; 2000-10-31 to 2019-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Sioux City Brick & Tile Company → United Brick Pit; 2003-09-11 to 2023-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Norman P  Mahoney et al → Sioux City Brick & Tile Company; 2003-09-11 to 2019-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Mark B  Mahoney et al → Sioux City Brick & Tile Company; 2003-09-11 to 2019-08-22; source msha-controller-operator-history
- **controller_controls_mine:** FIGGS BIDCO 2 LIMITED → United Brick Pit; 2015-02-26 to 2018-11-22; source msha-controller-operator-history
- **controller_controls_mine:** Brickworks Limited → United Brick Pit; 2018-11-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brickworks Limited → United Brick Pit; 2019-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brickworks Limited → Sioux City Brick & Tile Company; 2019-08-23 to 2023-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Glen-Gery Corporation → United Brick Pit; 2023-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** FIGGS BIDCO 2 LIMITED → Glen-Gery Corporation; 2023-03-20 to 2018-11-22; source msha-controller-operator-history
- **controller_controls_operator:** Brickworks Limited → Glen-Gery Corporation; 2023-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Glen-Gery Corporation; 2023-03-20 to 2015-02-25; source msha-controller-operator-history