# Relationship history for MSHA mine 3401847

Current hierarchy: **CRH PLC → Holliday Sand & Gravel → Coweta West #19**

- 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:** Coweta Sand & Transportation Inc → Coweta West #19; 2000-05-01 to 2004-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Jones → Coweta West #19; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Jones → Coweta Sand & Transportation Inc; 2000-06-01 to 2004-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → Coweta West #19; 2001-07-12 to 2015-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Ark River Sand of Oklahoma, Inc. → Coweta West #19; 2004-05-04 to 2005-11-30; source msha-controller-operator-history
- **controller_controls_mine:** H T  Ritchie → Coweta West #19; 2004-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H T  Ritchie → Ark River Sand of Oklahoma, Inc.; 2004-05-04 to 2005-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge  North America Inc → Coweta West #19; 2005-12-01 to 2021-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge  North America Inc; 2005-12-01 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Ash Grove Cement Company → Coweta West #19; 2008-08-01 to 2018-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Coweta West #19; 2015-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lafarge  North America Inc; 2015-07-10 to 2021-10-10; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Coweta West #19; 2018-06-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Holliday Sand & Gravel → Coweta West #19; 2021-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ash Grove Cement Company → Holliday Sand & Gravel; 2021-10-11 to 2018-06-20; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Holliday Sand & Gravel; 2021-10-11 to current/open; source msha-controller-operator-history