# Relationship history for MSHA mine 4407131

Current hierarchy: **Amrize Ltd → Aggregate Industries → Fulks 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

- **controller_controls_mine:** Aggregate Industries PLC → Fulks Plant; 1950-01-01 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Ennstone PLC → Fulks Plant; 1997-07-29 to 2009-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Ennstone Inc → Fulks Plant; 2005-04-08 to 2011-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Ennstone PLC → Ennstone Inc; 2005-04-08 to 2009-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Fulks Plant; 2009-04-30 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Elliott → Fulks Plant; 2009-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Elliott → Ennstone Inc; 2009-06-11 to 2011-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Aggregate Industries → Fulks Plant; 2011-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Aggregate Industries; 2011-11-01 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Aggregate Industries; 2011-11-01 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Fulks Plant; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Aggregate Industries; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Fulks Plant; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Aggregate Industries; 2025-06-23 to current/open; source msha-controller-operator-history