# Relationship history for MSHA mine 3100129

Current hierarchy: **Lone Star Funds → Hanson Brick East LLC → GUILFORD COUNTY MINES**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Boren Clay Products → GUILFORD COUNTY MINES; 1950-01-01 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Boren Clay Products Company → GUILFORD COUNTY MINES; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Boren Clay Products Company → Boren Clay Products; 1950-01-01 to 1999-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Jannock Ltd → GUILFORD COUNTY MINES; 1950-01-01 to 2002-04-15; source msha-controller-operator-history
- **operator_operates_mine:** Boren Clay Products Company Inc → GUILFORD COUNTY MINES; 1999-05-14 to 2004-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → GUILFORD COUNTY MINES; 1999-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Boren Clay Products Company Inc; 1999-05-14 to 2004-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → GUILFORD COUNTY MINES; 2002-04-16 to 2007-08-22; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Brick East LLC → GUILFORD COUNTY MINES; 2004-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Brick East LLC; 2004-10-15 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Jannock Ltd → Hanson Brick East LLC; 2004-10-15 to 2002-04-15; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → GUILFORD COUNTY MINES; 2007-08-23 to 2015-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Brick East LLC; 2007-08-23 to 2015-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Lone Star Funds → GUILFORD COUNTY MINES; 2015-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds → Hanson Brick East LLC; 2015-03-13 to current/open; source msha-controller-operator-history