# Relationship history for MSHA mine 1102725

Current hierarchy: **Amrize Ltd → Amrize Mid-America Inc. → Amrize Utica Stone 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Lafarge Utica Inc → Amrize Utica Stone Plant; 1980-03-01 to 2011-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Lyle C  Sitterly Jr → Amrize Utica Stone Plant; 1980-03-01 to 2006-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Lyle C  Sitterly Jr → Lafarge Utica Inc; 1980-03-01 to 2006-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Amrize Utica Stone Plant; 2006-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Utica Inc; 2006-10-06 to 2011-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Amrize Utica Stone Plant; 2009-06-01 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Amrize Mid-America Inc. → Amrize Utica Stone Plant; 2011-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Amrize Mid-America Inc.; 2011-04-21 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Amrize Utica Stone Plant; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Amrize Mid-America Inc.; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Amrize Utica Stone Plant; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Amrize Mid-America Inc.; 2025-06-23 to current/open; source msha-controller-operator-history