# Relationship history for MSHA mine 0504356

Current hierarchy: **CRH PLC → Oldcastle SW Group, Inc. → FCM Crusher 4 (CSP#4)**

- 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

- **operator_operates_mine:** High Country Aggregates Inc → FCM Crusher 4 (CSP#4); 1988-06-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Judy  DeVincentis et al → FCM Crusher 4 (CSP#4); 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Judy  DeVincentis et al → High Country Aggregates Inc; 1988-06-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → FCM Crusher 4 (CSP#4); 1998-01-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** High Country Aggregates → FCM Crusher 4 (CSP#4); 1999-04-01 to 2005-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Mark S  Haldorson → FCM Crusher 4 (CSP#4); 1999-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark S  Haldorson → High Country Aggregates; 1999-04-01 to 2005-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Southern Ute Indian Tribe → FCM Crusher 4 (CSP#4); 2004-01-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sky Ute Sand & Gravel, LLC → FCM Crusher 4 (CSP#4); 2005-06-29 to 2011-04-14; source msha-controller-operator-history
- **controller_controls_operator:** Southern Ute Indian Tribe → Sky Ute Sand & Gravel, LLC; 2005-06-29 to 2011-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Oldcastle SW Group, Inc. → FCM Crusher 4 (CSP#4); 2011-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Oldcastle SW Group, Inc.; 2011-04-15 to current/open; source msha-controller-operator-history