# Relationship history for MSHA mine 3610232

Current hierarchy: **Amrize Ltd → Amrize Mid-Atlantic Inc. → Amrize South Bend Quarry**

- 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 → Amrize South Bend Quarry; 1950-01-01 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Christopher J  Evans → Amrize South Bend Quarry; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Amrize South Bend Quarry; 1998-02-11 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Amrize South Bend Quarry; 2009-04-30 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Amrize South Bend Quarry; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Britt Energies Inc. → Amrize South Bend Quarry; 2018-03-15 to 2020-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Christopher J  Evans → Britt Energies Inc.; 2018-03-15 to 2020-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Redland Quarries NY INC. → Amrize South Bend Quarry; 2020-10-01 to 2022-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Redland Quarries NY INC.; 2020-10-01 to 2022-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Redland Quarries NY INC.; 2020-10-01 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Amrize Mid-Atlantic Inc. → Amrize South Bend Quarry; 2022-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Amrize Mid-Atlantic Inc.; 2022-05-31 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Amrize Mid-Atlantic Inc.; 2022-05-31 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Amrize Mid-Atlantic Inc.; 2022-05-31 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Amrize South Bend Quarry; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Redland Quarries NY INC.; 2025-06-23 to 2022-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Amrize Mid-Atlantic Inc.; 2025-06-23 to current/open; source msha-controller-operator-history