# Relationship history for MSHA mine 2402641

Current hierarchy: **GCC SAB de CV → GCC Three Forks, LLC. → Geyser**

- 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:** Holcim Ltd → Geyser; 2001-12-12 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Holcim (US) Incorporated → Geyser; 2012-09-13 to 2015-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Holcim (US) Incorporated; 2012-09-13 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Geyser; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Holcim (US) Incorporated; 2015-07-10 to 2015-07-31; source msha-controller-operator-history
- **operator_operates_mine:** CRH US → Geyser; 2015-08-01 to 2018-06-22; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Geyser; 2015-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → CRH US; 2015-08-01 to 2018-06-22; source msha-controller-operator-history
- **operator_operates_mine:** GCC Three Forks, LLC. → Geyser; 2018-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** GCC SAB de CV → Geyser; 2018-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** GCC SAB de CV → GCC Three Forks, LLC.; 2018-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Geyser; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Holcim (US) Incorporated; 2025-06-23 to 2015-07-31; source msha-controller-operator-history