# Relationship history for MSHA mine 0203316

Current hierarchy: **Amrize Ltd → Holcim-WCR, Inc → Sun City Aggregates**

- 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 → Sun City Aggregates; 1997-05-14 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Joel D  Schneyer et al → Sun City Aggregates; 2005-01-31 to 2007-07-08; source msha-controller-operator-history
- **controller_controls_mine:** ARPL Tecnolgia Industrial S A → Sun City Aggregates; 2007-07-09 to 2013-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Sun City Aggregates; 2009-04-30 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Drake Materials → Sun City Aggregates; 2013-04-15 to 2023-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Joel D  Schneyer et al → Drake Materials; 2013-04-15 to 2007-07-08; source msha-controller-operator-history
- **controller_controls_operator:** John N  Stoss et al → Drake Materials; 2013-04-15 to 2007-07-08; source msha-controller-operator-history
- **controller_controls_operator:** ARPL Tecnolgia Industrial S A → Drake Materials; 2013-04-15 to 2013-04-14; source msha-controller-operator-history
- **controller_controls_mine:** UNACEM Corp S A A → Sun City Aggregates; 2013-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** UNACEM Corp S A A → Drake Materials; 2013-04-15 to 2023-01-18; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Sun City Aggregates; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Holcim-WCR, Inc → Sun City Aggregates; 2023-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Holcim-WCR, Inc; 2023-01-19 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Holcim-WCR, Inc; 2023-01-19 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Holcim-WCR, Inc; 2023-01-19 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Sun City Aggregates; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Holcim-WCR, Inc; 2025-06-23 to current/open; source msha-controller-operator-history