# Relationship history for MSHA mine 0504760

Current hierarchy: **Holcim Ltd → Lafarge West Incorporated → Southern Rental #1**

- 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:** Lafarge S A → Southern Rental #1; 2002-01-31 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge West Incorporated → Southern Rental #1; 2003-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge West Incorporated; 2003-03-10 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Southern Rental #1; 2015-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lafarge West Incorporated; 2015-07-10 to current/open; source msha-controller-operator-history